Line 3 is a hidden What is the best approach to get t
odd/even css rule.
:nth-child() pseudo-class looks through the children tree of the parent to match the valid child (odd, even, etc), therefore when you combine it with :not(.hidden) it won't filter the elements properly.
Alternatively, we could fake the effect by CSS gradient as follows:
.hidden {display:none;}
.wrap {
line-height: 1.2em;
background-color: orange;
background-image: linear-gradient(transparent 50%, green 50%);
background-size: 100% 2.4em;
}
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