* {
margin:0;
padding:0;
list-style:none;
}
.icon {
width:100px;
height:100px;
margin:10px auto;
background:red;
padding:30px 0;
box-sizing:border-box;
}
.icon ul li {
width:40px;
height:4px;
background:#fff;
margin:6px auto;
transition:all 0.3s
}
.icon ul:hover {
cursor:pointer;
}
.active li:nth-child(2) {
opacity:0;
}
.active li:nth-child(1) {
transform:translateY(10px) rotate(45deg)
}
.active li:nth-child(3) {
transform:translateY(-10px) rotate(-45deg)
}