Akshat Akshat - 4 months ago 26
CSS Question

What does the "~" (tilde/squiggle/twiddle) CSS selector mean?

Searching for the

character isn't easy. I was looking over some CSS and found this

.check:checked ~ .content {

What does it mean?


The ~ selector is in fact the General sibling combinator:

The general sibling combinator is made of the "tilde" (U+007E, ~) character that separates two sequences of simple selectors. The elements represented by the two sequences share the same parent in the document tree and the element represented by the first sequence precedes (not necessarily immediately) the element represented by the second one.

Consider the following example:

.a ~ .b {
  background-color: powderblue;
  <li class="b">1st</li>
  <li class="a">2nd</li>
  <li class="b">4th</li>
  <li class="b">5th</li>

.a ~ .b matches the 4th and 5th list item because they:

  • Are .b elements
  • Are siblings of .a
  • Appear after .a in HTML source order.

Likewise, .check:checked ~ .content matches all .content elements that are siblings of .check:checked and appear after it.