body{
margin: 0;
padding: 0;
background: #f5f6fa;
}
.middle{
position: absolute;
top: 50%;
transform: translateY(-50%);
width: 100%;
text-align: center;
}
.btn{
display: inline-block;
width: 90px;
height: 90px;
background: #f1f1f1;
margin: 10px;
border-radius: 30%;
box-shadow: 0 5px 15px -5px #00000070;
color: #3742fa;
overflow: hidden;
position: relative;
}
.btn i{
line-height: 90px;
font-size: 26px;
transition: 0.2s linear;
}
.btn:hover i{
transform: scale(1.3);
color: #f1f1f1;
}
.btn::before{
content: "";
position: absolute;
width: 120%;
height: 120%;
background: #3498db;
transform: rotate(45deg);
left: -110%;
top: 90%;
}
.btn:hover::before{
animation: aaa 0.7s 1;
top: -10%;
left: -10%;
}
@@keyframes aaa {
0%{
left: -110%;
top: 90%;
}50%{
left: 10%;
top: -30%;
}100%{
top: -10%;
left: -10%;
}
}
