CSS :hover on other element? (SO)

http://stackoverflow.com/questions/11507481/css-hover-on-other-element/11507564#11507564

by thebabydino

HTML

<div class="a">aaa</div>
<div class="b">bbb</div>
<div class="c">ccc</div>

CSS

.a:hover + .b { font-weight: 700; }
.a:hover ~ div { background: lightgreen; }