diff --git a/css/extra.css b/css/extra.css
index 5cc5a89..83b8dcc 100644
--- a/css/extra.css
+++ b/css/extra.css
@@ -27,9 +27,9 @@ th, td {
.map-table tbody th {max-width: 200px;}
details, summary {display: block;}
details {border-bottom: 1px solid #ccc; padding: 0.5em;}
-summary {padding: 0.25em;background: #fff url(img/plus.png) no-repeat 0.5em center; padding: 0.25em 0.25em 0.25em 2em;}
+summary {padding: 0.25em;background: #fff url(../img/plus.png) no-repeat 0.5em center; padding: 0.25em 0.25em 0.25em 2em;}
summary::-webkit-details-marker {display: none;}
-.open summary, details[open] summary {background-color: #f5f5f5; background-image: url(img/minus.png);}
+.open summary, details[open] summary {background-color: #f5f5f5; background-image: url(../img/minus.png);}
summary .el-context {display: inline;}
summary:hover, summary:focus, details[open] summary:hover, details[open] summary:focus {background-color: #e0e0e0;}
.map table {margin: 0.5em 1% 1%; width: 98%;}
@@ -40,5 +40,5 @@ summary:hover, summary:focus, details[open] summary:hover, details[open] summary
.show-hide-cols span {margin: 0.25em 0; vertical-align: middle;}
.show-hide-cols button {background-color: #ddd; font-size: 80%; margin: 0 5px; padding-right: 15px;}
.show-hide-cols .action {position: absolute; left: -9999em;}
-.show-col {background: url(img/cross.png) no-repeat right center;}
-.hide-col {background: url(img/tick.png) no-repeat right center;}
\ No newline at end of file
+.show-col {background: url(../img/cross.png) no-repeat right center;}
+.hide-col {background: url(../img/tick.png) no-repeat right center;}
\ No newline at end of file
diff --git a/index.html b/index.html
index 0c1c6ba..ea29ee6 100644
--- a/index.html
+++ b/index.html
@@ -3,6 +3,8 @@
HTML to Platform Accessibility APIs Implementation Guide
+
+