transform rotateZ
by Wang Peng
HTML
<img class="rotateZ" src="http://www.chedanji.com/content/images/2015/05/zhuyin.jpg" alt="">
CSS
.rotateZ {
-webkit-transition: -webkit-transform 1s ease-in-out;
transition: transform 1s ease-in-out;
}
.rotateZ:hover {
-webkit-transform: rotateZ(180deg);
transform: rotateZ(180deg);
}