close button css

1<a href="#" class="close">
2
3<style>
4.close {
5  position: absolute;
6  right: 32px;
7  top: 32px;
8  width: 32px;
9  height: 32px;
10  opacity: 0.3;
11}
12.close:hover {
13  opacity: 1;
14}
15.close:before, .close:after {
16  position: absolute;
17  left: 15px;
18  content: ' ';
19  height: 33px;
20  width: 2px;
21  background-color: #333;
22}
23.close:before {
24  transform: rotate(45deg);
25}
26.close:after {
27  transform: rotate(-45deg);
28}
29<style>