General sibling combinator A ~ B

The General sibling combinator represents a "B" element following a "A" element.

Syntax

A ~ B{ preperties }

The general sibling combinator is made of the "tilde" (~) character that separates two sequences of simple selectors.
The elements represented by the two sequences share the same parent in the document tree.

[style.css]

 h1 ~ p{
   background-color: yellow;
 }

[index.html]

<body>
<h1>Header 1</h1>
<h2>Header 2</h2>
<p>This is a paragraph.</p>
<p>This is a paragraph.</p>
</body>

The CSS Selectors Level 3 specification defines the General sibling combinator in 8.3.2. General sibling combinator.