Buton 9

.btn-5 {
color: #fff;
border-radius: 5px;
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;
width: 130px;
height: 40px;
line-height: 42px;
padding: 0;
border: none;
background: rgb(255,27,0);
background: linear-gradient(0deg, rgba(255,27,0,1) 0%, rgba(251,75,2,1) 100%);
}
.btn-5:hover {
color: #f0094a;
background: transparent;
box-shadow:none;
}
.btn-5:before,
.btn-5:after{
content:'';
position:absolute;
top:0;
right:0;
height:2px;
width:0;
background: #f0094a;
box-shadow:
-1px -1px 5px 0px #fff,
7px 7px 20px 0px #0003,
4px 4px 5px 0px #0002;
transition:400ms ease all;
}
.btn-5:after{
right:inherit;
top:inherit;
left:0;
bottom:0;
}
.btn-5:hover:before,
.btn-5:hover:after{
width:100%;
transition:800ms ease all;
}