WCAG 2.0 Techniques Applicable to Mobile without Changes

From Mobile Accessibility Task Force

General Techniques Applicable to Mobile without Changes

WCAG 2.0 Techniques

Technique Applies to
G5: Allowing users to complete an activity without any time limit Mobile Web, Native Apps
G8: Providing a movie with extended audio descriptions Mobile Web, Native Apps
G11: Creating content that blinks for less than 5 seconds Mobile Web, Native Apps
G13: Describing what will happen before a change to a form control that causes a change of context to occur is made Mobile Web, Native Apps
G14: Ensuring that information conveyed by color differences is also available in text Mobile Web, Native Apps
G15: Using a tool to ensure that content does not violate the general flash threshold or red flash threshold Mobile Web
G18: Ensuring that a contrast ratio of at least 4.5:1 exists between text (and images of text) and background behind the text Mobile Web
G19: Ensuring that no component of the content flashes more than three times in any 1-second period Mobile Web, Native Apps
G54: Including a sign language interpreter in the video stream Mobile Web, Native Apps
G55: Linking to definitions Mobile Web, Native Apps
G56: Mixing audio files so that non-speech sounds are at least 20 decibels lower than the speech audio content Mobile Web, Native Apps
G57: Ordering the content in a meaningful sequence Mobile Web, Native Apps
G58: Placing a link to the alternative for time-based media immediately next to the non-text content Mobile Web, Native Apps
G59: Placing the interactive elements in an order that follows sequences and relationships within the content Mobile Web, Native Apps
G62: Providing a glossary Mobile Web, Native Apps
G63: Providing a site map Mobile Web
G64: Providing a Table of Contents Mobile Web, Native Apps
G65: Providing a breadcrumb trail Mobile Web, Native Apps
G69: Providing an alternative for time based media Mobile Web, Native Apps
G70: Providing a function to search an online dictionary Mobile Web, Native Apps
G71: Providing a help link on every Web page Mobile Web, Native Apps
G73: Providing a long description in another location with a link to it that is immediately adjacent to the non-text content Mobile Web
G74: Providing a long description in text near the non-text content, with a reference to the location of the long description in the short description Mobile Web
G75: Providing a mechanism to postpone any updating of content Mobile Web, Native Apps
G76: Providing a mechanism to request an update of the content instead of updating automatically Mobile Web, Native Apps
G79: Providing a spoken version of the text Mobile Web, Native Apps
G81: Providing a synchronized video of the sign language interpreter that can be displayed in a different viewport or overlaid on the image by the player Mobile Web, Native Apps
G86: Providing a text summary that requires reading ability less advanced than the upper secondary education level Mobile Web, Native Apps
G91: Providing link text that describes the purpose of a link Mobile Web, Native Apps
G92: Providing long description for non-text content that serves the same purpose and presents the same information Mobile Web, Native Apps
G93: Providing open (always visible) captions Mobile Web, Native Apps
G94: Providing short text alternative for non-text content that serves the same purpose and presents the same information as the non-text content Mobile Web, Native Apps
G95: Providing short text alternatives that provide a brief description of the non-text content Mobile Web, Native Apps
G96: Providing textual identification of items that otherwise rely only on sensory information to be understood Mobile Web, Native Apps
G97: Providing the first use of an abbreviation immediately before or after following the expanded form Mobile Web, Native Apps
G98: Providing the ability for the user to review and correct answers before submitting Mobile Web, Native Apps
G99: Providing the ability to recover deleted information Mobile Web, Native Apps
G100: Providing a short text alternative which is the accepted name or a descriptive name of the non-text content Mobile Web, Native Apps
G101: Providing the definition of a word or phrase used in an unusual or restricted way Mobile Web, Native Apps
G102: Providing the expansion or explanation of an abbreviation Mobile Web, Native Apps
G103: Providing visual illustrations, pictures, and symbols to help explain ideas, events, and processes Mobile Web, Native Apps
G105: Saving data so that it can be used after a user re-authenticates Mobile Web, Native Apps
G107: Using "activate" rather than "focus" as a trigger for changes of context Mobile Web, Native Apps
G108: Using markup features to expose the name and role, allow user-settable properties to be directly set, and provide notification of changes Mobile Web, Native Apps
G110: Using an instant client-side redirect Mobile Web, Native Apps
G111: Using color and pattern Mobile Web, Native Apps
G112: Using inline definitions Mobile Web, Native Apps
G115: Using semantic elements to mark up structure Mobile Web, Native Apps
G117: Using text to convey information that is conveyed by variations in presentation of text Mobile Web, Native Apps
G120: Providing the pronunciation immediately following the word Mobile Web, Native Apps
G121: Linking to pronunciations Mobile Web, Native Apps
G123: Adding a link at the beginning of a block of repeated content to go to the end of the block Mobile Web
G124: Adding links at the top of the page to each area of the content Mobile Web
G125: Providing links to navigate to related Web pages Mobile Web
G126: Providing a list of links to all other Web pages Mobile Web
G127: Identifying a Web page's relationship to a larger collection of Web pages Mobile Web
G128: Indicating current location within navigation bars Mobile Web, Native Apps
G130: Providing descriptive headings Mobile Web, Native Apps
G131: Providing descriptive labels Mobile Web, Native Apps
G133: Providing a checkbox on the first page of a multipart form that allows users to ask for longer session time limit or no session time limit Mobile Web, Native Apps
G134: Validating Web pages Mobile Web
G135: Using the accessibility API features of a technology to expose names and roles, to allow user-settable properties to be directly set, and to provide notification of changes Mobile Web, Native Apps
G136: Providing a link at the beginning of a nonconforming Web page that points to a conforming alternate version Mobile Web
G138: Using semantic markup whenever color cues are used Mobile Web, Native Apps
G139: Creating a mechanism that allows users to jump to errors Mobile Web, Native Apps
G140: Separating information and structure from presentation to enable different presentations Mobile Web, Native Apps
G141: Organizing a page using headings Mobile Web, Native Apps
G143: Providing a text alternative that describes the purpose of the CAPTCHA Mobile Web, Native Apps
G144: Ensuring that the Web Page contains another CAPTCHA serving the same purpose using a different modality Mobile Web, Native Apps
G145: Ensuring that a contrast ratio of at least 3:1 exists between text (and images of text) and background behind the text Mobile Web, Native Apps
G146: Using liquid layout Mobile Web, Native Apps
G148: Not specifying background color, not specifying text color, and not using technology features that change those defaults Mobile Web, Native Apps
G149: Using user interface components that are highlighted by the user agent when they receive focus Mobile Web, Native Apps
G150: Providing text based alternatives for live audio-only content Mobile Web, Native Apps
G151: Providing a link to a text transcript of a prepared statement or script if the script is followed Mobile Web
G152: Setting animated gif images to stop blinking after n cycles (within 5 seconds) Mobile Web
G153: Making the text easier to read Mobile Web
G155: Providing a checkbox in addition to a submit button Mobile Web
G156: Using a technology that has commonly-available user agents that can change the foreground and background of blocks of text Mobile Web
G157: Incorporating a live audio captioning service into a Web page Mobile Web
G158: Providing an alternative for time-based media for audio-only content Mobile Web
G159: Providing an alternative for time-based media for video-only content Mobile Web
G160: Providing sign language versions of information, ideas, and processes that must be understood in order to use the content Mobile Web
G161: Providing a search function to help users find content Mobile Web
G163: Using standard diacritical marks that can be turned off Mobile Web
G164: Providing a stated period of time after submission of the form when the order can within which an online request (or transaction) may be updated, amended or canceled by the user after making the request Mobile Web
G165: Using the default focus indicator for the platform so that high visibility default focus indicators will carry over Mobile Web
G166: Providing audio that describes the important video content and describing it as such Mobile Web
G167: Using an adjacent button to label the purpose of a field Mobile Web
G168: Requesting confirmation to continue with selected action Mobile Web
G169: Aligning text on only one side Mobile Web
G170: Providing a control near the beginning of the Web page that turns off sounds that play automatically Mobile Web
G171: Playing sounds only on user request Mobile Web
G172: Providing a mechanism to remove full justification of text Mobile Web
G173: Providing a version of a movie with audio descriptions Mobile Web
G174: Providing a control with a sufficient contrast ratio that allows users to switch to a presentation that uses sufficient contrast Mobile Web
G175: Providing a multi color selection tool on the page for foreground and background colors Mobile Web
G176: Keeping the flashing area small enough Mobile Web
G177: Providing suggested correction text Mobile Web
G178: Providing controls on the Web page that allow users to incrementally change the size of all text on the page up to 200 percent Mobile Web
G179: Ensuring that there is no loss of content or functionality when the text resizes and text containers do not change their width Mobile Web
G180: Providing the user with a means to set the time limit to 10 times the default time limit Mobile Web
G181: Encoding user data as hidden or encrypted data in a re-authorization page Mobile Web
G182: Ensuring that additional visual cues are available when text color differences are used to convey information Mobile Web
G183: Using a contrast ratio of 3:1 with surrounding text and providing additional visual cues on focus for links or controls where color alone is used to identify them Mobile Web
G184: Providing text instructions at the beginning of a form or set of fields that describes the necessary input Mobile Web
G185: Linking to all of the pages on the site from the home page Mobile Web
G186: Using a control in the Web page that stops moving, blinking, or auto-updating content Mobile Web
G187: Using a technology to include blinking content that can be turned off via the user agent Mobile Web
G188: Providing a button on the page to increase line spaces and paragraph spaces Mobile Web
G189: Providing a control near the beginning of the Web page that changes the link text Mobile Web
G190: Providing a link adjacent to or associated with a non-conforming object that links to a conforming alternate version Mobile Web
G191: Providing a link, button, or other mechanism that reloads the page without any blinking content Mobile Web
G192: Fully conforming to specifications Mobile Web
G193: Providing help by an assistant in the Web page Mobile Web
G194: Providing spell checking and suggestions for text input Mobile Web
G195: Using an author-supplied, highly visible focus indicator Mobile Web
G196: Using a text alternative on one item within a group of images that describes all items in the group Mobile Web
G197: Using labels, names, and text alternatives consistently for content that has the same functionality Mobile Web
G198: Providing a way for the user to turn the time limit off Mobile Web
G199: Providing success feedback when data is submitted successfully Mobile Web
G200: Opening new windows and tabs from a link only when necessary Mobile Web
G201: Giving users advanced warning when opening a new window Mobile Web

HTML Applicable to Mobile without Changes

Technique Applies to
H4: Creating a logical tab order through links, form controls, and objects Mobile Web
H25: Providing a title using the title element Mobile Web
H27: Providing text and non-text alternatives for object Mobile Web
H28: Providing definitions for abbreviations by using the abbr and acronym elements Mobile Web
H30: Providing link text that describes the purpose of a link for anchor elements Mobile Web
H33: Supplementing link text with the title attribute Mobile Web
H34: Using a Unicode right-to-left mark (RLM) or left-to-right mark (LRM) to mix text direction inline Mobile Web
H35: Providing text alternatives on applet elements Mobile Web
H37: Using alt attributes on img elements Mobile Web
H39: Using caption elements to associate data table captions with data tables Mobile Web
H40: Using definition lists Mobile Web
H42: Using h1-h6 to identify headings Mobile Web
H43: Using id and headers attributes to associate data cells with header cells in data tables Mobile Web
H44: Using label elements to associate text labels with form controls Mobile Web
H45: Using longdesc Mobile Web
H46: Using noembed with embed Mobile Web
H48: Using ol, ul and dl for lists or groups of links Mobile Web
H49: Using semantic markup to mark emphasized or special text Mobile Web
H51: Using table markup to present tabular information Mobile Web
H53: Using the body of the object element Mobile Web
H54: Using the dfn element to identify the defining instance of a word Mobile Web
H56: Using the dir attribute on an inline element to resolve problems with nested directional runs Mobile Web
H57: Using language attributes on the html element Mobile Web
H58: Using language attributes to identify changes in the human language Mobile Web
H59: Using the link element and navigation tools Mobile Web
H60: Using the link element to link to a glossary Mobile Web
H62: Using the ruby element Mobile Web
H64: Using the title attribute of the frame and iframe elements Mobile Web
H65: Using the title attribute to identify form controls when the label element cannot be used Mobile Web
H67: Using null alt text and no title attribute on img elements for images that AT should ignore Mobile Web
H69: Providing heading elements at the beginning of each section of content Mobile Web
H70: Using frame elements to group blocks of repeated material Mobile Web
H71: Providing a description for groups of form controls using fieldset and legend elements Mobile Web
H73: Using the summary attribute of the table element to give an overview of data tables Mobile Web
H74: Ensuring that opening and closing tags are used according to specification Mobile Web
H75: Ensuring that Web pages are well-formed Mobile Web
H76: Using meta refresh to create an instant client-side redirect Mobile Web
H77: Identifying the purpose of a link using link text combined with its enclosing list item Mobile Web
H78: Identifying the purpose of a link using link text combined with its enclosing paragraph Mobile Web
H79: Identifying the purpose of a link using link text combined with its enclosing table cell and associated table headings Mobile Web
H80: Identifying the purpose of a link using link text combined with the preceding heading element Mobile Web
H81: Identifying the purpose of a link in a nested list using link text combined with the parent list item under which the list is nested Mobile Web
H84: Using a button with a select element to perform an action Mobile Web
H85: Using OPTGROUP to group OPTION elements inside a SELECT Mobile Web
H86: Providing text alternatives for ASCII art, emoticons, and leetspeak Mobile Web
H88: Using HTML according to spec Mobile Web
H90: Indicating required form controls using label or legend Mobile Web
H93: Ensuring that id attributes are unique on a Web page Mobile Web
H94: Ensuring that elements do not contain duplicate attributes Mobile Web

CSS Applicable to Mobile without Changes

Technique Applies to
C6: Positioning content based on structural markup Mobile Web
C7: Using CSS to hide a portion of the link text Mobile Web
C8: Using CSS letter-spacing to control spacing within a word Mobile Web
C9: Using CSS to include decorative images Mobile Web
C13: Using named font sizes Mobile Web
C14: Using em units for font sizes Mobile Web
C17: Scaling form elements which contain text Mobile Web
C18: Using CSS margin and padding rules instead of spacer images for layout design Mobile Web
C19: Specifying alignment either to the left OR right in CSS Mobile Web
C21: Specifying line spacing in CSS Mobile Web
C22: Using CSS to control visual presentation of text Mobile Web
C24: Using percentage values in CSS for container sizes Mobile Web
C26: Providing options within the content to switch to a layout that does not require the user to scroll horizontally to read a line of text Mobile Web
C27: Making the DOM order match the visual order Mobile Web
C28: Specifying the size of text containers using em units Mobile Web
C29: Using a style switcher to provide a conforming alternate version Mobile Web
C30: Using CSS to replace text with images of text and providing user interface controls to switch Mobile Web

Client Scripting Techniques Applicable to Mobile without Changes

Technique Applies to
SCR1: Allowing the user to extend the default time limit Mobile Web
SCR2: Using redundant keyboard and mouse event handlers Mobile Web
SCR14: Using scripts to make nonessential alerts optional Mobile Web
SCR16: Providing a script that warns the user a time limit is about to expire Mobile Web
SCR18: Providing client-side validation and alert Mobile Web
SCR19: Using an onchange event on a select element without causing a change of context Mobile Web
SCR20: Using both keyboard and other device-specific functions Mobile Web
SCR21: Using functions of the Document Object Model (DOM) to add content to a page Mobile Web
SCR22: Using scripts to control blinking and stop it in five seconds or less Mobile Web
SCR24: Using progressive enhancement to open new windows on user request Mobile Web
SCR26: Inserting dynamic content into the Document Object Model immediately following its trigger element Mobile Web
SCR27: Reordering page sections using the Document Object Model Mobile Web
SCR28: Using an expandable and collapsible menu to bypass block of content Mobile Web
SCR29: Adding keyboard-accessible actions to static HTML elements Mobile Web
SCR32: Providing client-side validation and adding error text via the DOM Mobile Web
SCR33: Using script to scroll content, and providing a mechanism to pause it Mobile Web
SCR36: Providing a mechanism to allow users to display moving, scrolling, or auto-updating text in a static window or area Mobile Web

Failure Techniques Applicable to Mobile without Changes

Technique Applies to
F1: Failure of Success Criterion 1.3.2 due to changing the meaning of content by positioning information with CSS Mobile Web
F2: Failure of Success Criterion 1.3.1 due to using changes in text presentation to convey information without using the appropriate markup or text Mobile Web
F3: Failure of Success Criterion 1.1.1 due to using CSS to include images that convey important information Mobile Web
F4: Failure of Success Criterion 2.2.2 due to using text-decoration:blink without a mechanism to stop it in less than five seconds Mobile Web
F8: Failure of Success Criterion 1.2.2 due to captions omitting some dialogue or important sound effects Mobile Web
F9: Failure of Success Criterion 3.2.5 due to changing the context when the user removes focus from a form element Mobile Web
F12: Failure of Success Criterion 2.2.5 due to having a session time limit without a mechanism for saving user's input and re-establishing that information upon re-authentication Mobile Web
F13: Failure of Success Criterion 1.1.1 and 1.4.1 due to having a text alternative that does not include information that is conveyed by color differences in the image Mobile Web
F14: Failure of Success Criterion 1.3.3 due to identifying content only by its shape or location Mobile Web
F15: Failure of Success Criterion 4.1.2 due to implementing custom controls that do not use an accessibility API for the technology, or do so incompletely Mobile Web
F16: Failure of Success Criterion 2.2.2 due to including scrolling content where movement is not essential to the activity without also including a mechanism to pause and restart the content Mobile Web
F17: Failure of Success Criterion 1.3.1 and 4.1.1 due to insufficient information in DOM to determine one-to-one relationships (e.g., between labels with same id) in HTML Mobile Web
F20: Failure of Success Criterion 1.1.1 and 4.1.2 due to not updating text alternatives when changes to non-text content occur Mobile Web
F22: Failure of Success Criterion 3.2.5 due to opening windows that are not requested by the user Mobile Web
F23: Failure of 1.4.2 due to playing a sound longer than 3 seconds where there is no mechanism to turn it off Mobile Web
F24: Failure of Success Criterion 1.4.3, 1.4.6 and 1.4.8 due to specifying foreground colors without specifying background colors or vice versa Mobile Web
F25: Failure of Success Criterion 2.4.2 due to the title of a Web page not identifying the contents Mobile Web
F26: Failure of Success Criterion 1.3.3 due to using a graphical symbol alone to convey information Mobile Web
F30: Failure of Success Criterion 1.1.1 and 1.2.1 due to using text alternatives that are not alternatives (e.g., filenames or placeholder text) Mobile Web
F31: Failure of Success Criterion 3.2.4 due to using two different labels for the same function on different Web pages within a set of Web pages Mobile Web
F32: Failure of Success Criterion 1.3.2 due to using white space characters to control spacing within a word) Mobile Web
F33: Failure of Success Criterion 1.3.1 and 1.3.2 due to using white space characters to create multiple columns in plain text content Mobile Web
F34: Failure of Success Criterion 1.3.1 and 1.3.2 due to using white space characters to format tables in plain text content Mobile Web
F36: Failure of Success Criterion 3.2.2 due to automatically submitting a form and presenting new content without prior warning when the last field in the form is given a value Mobile Web
F37: Failure of Success Criterion 3.2.2 due to launching a new window without prior warning when the status of a radio button, check box or select list is changed Mobile Web
F38: Failure of Success Criterion 1.1.1 due to omitting the alt-attribute for non-text content used for decorative purposes only in HTML Mobile Web
F39: Failure of Success Criterion 1.1.1 due to providing a text alternative that is not null (e.g., alt="spacer" or alt="image") for images that should be ignored by assistive technology Mobile Web
F40: Failure of Success Criterion 2.2.1 and 2.2.4 due to using meta redirect with a time limit Mobile Web
F41: Failure of Success Criterion 2.2.1, 2.2.4, and 3.2.5 due to using meta refresh with a time-out Mobile Web
F42: Failure of Success Criterion 1.3.1 and 2.1.1 due to using scripting events to emulate links in a way that is not programmatically determinable Mobile Web
F43: Failure of Success Criterion 1.3.1 due to using structural markup in a way that does not represent relationships in the content Mobile Web
F44: Failure of Success Criterion 2.4.3 due to using tabindex to create a tab order that does not preserve meaning and operability Mobile Web
F46: Failure of Success Criterion 1.3.1 due to using th elements, caption elements, or non-empty summary attributes in layout tables Mobile Web
F47: Failure of Success Criterion 2.2.2 due to using the blink element Mobile Web
F48: Failure of Success Criterion 1.3.1 due to using the pre element to markup tabular information Mobile Web
F49: Failure of Success Criterion 1.3.2 due to using an HTML layout table that does not make sense when linearized Mobile Web
F50: Failure of Success Criterion 2.2.2 due to a script that causes a blink effect without a mechanism to stop the blinking at 5 seconds or less Mobile Web
F52: Failure of Success Criterion 3.2.1 and 3.2.5 due to opening a new window as soon as a new page is loaded Mobile Web
F58: Failure of Success Criterion 2.2.1 due to using server-side techniques to automatically redirect pages after a time-out Mobile Web
F59: Failure of Success Criterion 4.1.2 due to using script to make div or span a user interface control in HTML Mobile Web
F60: Failure of Success Criterion 3.2.5 due to launching a new window when a user enters text into an input field Mobile Web
F61: Failure of Success Criterion 3.2.5 due to complete change of main content through an automatic update that the user cannot disable from within the content Mobile Web
F62: Failure of Success Criterion 1.3.1 and 4.1.1 due to insufficient information in DOM to determine specific relationships in XML Mobile Web
F63: Failure of Success Criterion 2.4.4 due to providing link context only in content that is not related to the link Mobile Web
F65: Failure of Success Criterion 1.1.1 due to omitting the alt attribute on img elements, area elements, and input elements of type "image" Mobile Web
F66: Failure of Success Criterion 3.2.3 due to presenting navigation links in a different relative order on different pages Mobile Web
F67: Failure of Success Criterion 1.1.1 and 1.2.1 due to providing long descriptions for non-text content that does not serve the same purpose or does not present the same information Mobile Web
F68: Failure of Success Criterion 1.3.1 and 4.1.2 due to the association of label and user interface controls not being programmatically determinable Mobile Web
F70: Failure of Success Criterion 4.1.1 due to incorrect use of start and end tags or attribute markup Mobile Web
F71: Failure of Success Criterion 1.1.1 due to using text look-alikes to represent text without providing a text alternative Mobile Web
F72: Failure of Success Criterion 1.1.1 due to using ASCII art without providing a text alternative Mobile Web
F73: Failure of Success Criterion 1.4.1 due to creating links that are not visually evident without color vision Mobile Web
F74: Failure of Success Criterion 1.2.2 and 1.2.8 due to not labeling a synchronized media alternative to text as an alternative Mobile Web
F75: Failure of Success Criterion 1.2.2 by providing synchronized media without captions when the synchronized media presents more information than is presented on the page Mobile Web
F76: Failure of Success Criterion 3.2.2 due to providing instruction material about the change of context by change of setting in a user interface element at a location that users may bypass Mobile Web
F77: Failure of Success Criterion 4.1.1 due to duplicate values of type ID Mobile Web
F78: Failure of Success Criterion 2.4.7 due to styling element outlines and borders in a way that removes or renders non-visible the visual focus indicator Mobile Web
F79: Failure of Success Criterion 4.1.2 due to the focus state of a user interface component not being programmatically determinable or no notification of change of focus state available Mobile Web
F80: Failure of Success Criterion 1.4.4 when text-based form controls do not resize when visually rendered text is resized up to 200% Mobile Web
F81: Failure of Success Criterion 1.4.1 due to identifying required or error fields using color differences only Mobile Web
F82: Failure of Success Criterion 3.3.2 by visually formatting a s et of phone number fields but not including a text label Mobile Web
F83: Failure of Success Criterion 1.4.3 and 1.4.6 due to using background images that do not provide sufficient contrast with foreground text (or images of text) Mobile Web
F84: Failure of Success Criterion 2.4.9 due to using a non-specific link such as "click here" or "more" without a mechanism to change the link text to specific text. Mobile Web
F85: Failure of Success Criterion 2.4.3 due to using dialogs or menus that are not adjacent to their trigger control in the sequential navigation order Mobile Web
F86: Failure of Success Criterion 4.1.2 due to not providing names for each part of a multi-part form field, such as a US telephone number Mobile Web
F87: Failure of Success Criterion 1.3.1 due to inserting non-decorative content by using :before and :after pseudo-elements and the 'content' property in CSS Mobile Web
F88: Failure of Success Criterion 1.4.8 due to using text that is justified (aligned to both the left and the right margins) Mobile Web
F89: Failure of Success Criteria 2.4.4, 2.4.9 and 4.1.2 due to using null alt on an image where the image is the only content in a link Mobile Web
F90: Failure of Success Criterion 1.3.1 for incorrectly associating table headers and content via the headers and id attributes Mobile Web
F91: Failure of Success Criterion 1.3.1 for not correctly marking up table headers Mobile Web