.btn{
color: #34495e;
font-family: 'Archivo', sans-serif;
font-size: 18px;
font-weight: 700;
text-transform: uppercase;
padding: 6px 12px;
border-radius: 0;
border: 1px solid #34495e;
overflow: hidden;
position: relative;
z-index: 1;
transition: all 0.3s linear;
}
.btn:hover,
.btn:focus{
color: #34495e;
}
.btn:before,
.btn span:before{
width: 0%;
height: 100%;
position: absolute;
transition: all 0.5s ease 0s;
}
.btn:before{
content: "";
background: #2980b9;
right: 0;
top: 0;
z-index: -1;
}
.btn span:before{
content: attr(data-text);
color: #fff;
overflow: hidden;
}
.btn:hover:before{ width: 100%; }
.btn:hover span:before{ width: calc(100% - 25px); }
@media only screen and (max-width: 767px){
.btn{ margin-bottom: 30px; }
}