HMTL部分

CSS部分

.close {  position: absolute;  right: 32px;  top: 32px;  width: 32px;  height: 32px;}.close:before, .close:after {  position: absolute;  left: 15px;  content: ' ';  height: 33px;  width: 2px;  background-color: #333;}.close:before {  transform: rotate(45deg);}.close:after {  transform: rotate(-45deg);}