Buton 17

.btn-13 {
width: 130px;
height: 40px;
color: #fff;
border-radius: 5px;
padding: 10px 25px;
background: transparent;
cursor: pointer;
transition: all 0.3s ease;
position: relative;
display: inline-block;
box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5),
7px 7px 20px 0px rgba(0,0,0,.1),
4px 4px 5px 0px rgba(0,0,0,.1);
outline: none;
background-color: #89d8d3;
background-image: linear-gradient(315deg, #89d8d3 0%, #03c8a8 74%);
border: none;
z-index: 1;
}
.btn-13:after {
position: absolute;
content: "";
width: 100%;
height: 0;
bottom: 0;
left: 0;
z-index: -1;
border-radius: 5px;
background-color: #4dccc6;
background-image: linear-gradient(315deg, #4dccc6 0%, #96e4df 74%);
box-shadow:
-7px -7px 20px 0px #fff9,
-4px -4px 5px 0px #fff9,
7px 7px 20px 0px #0002,
4px 4px 5px 0px #0001;
transition: all 0.3s ease;
}
.btn-13:hover {
color: #fff;
}
.btn-13:hover:after {
top: 0;
height: 100%;
}
.btn-13:active {
top: 2px;
}