:root{
--color: #ffad06;
}
.btn{
color: var(--color);
font-family: 'Raleway', sans-serif;
font-size: 18px;
font-weight: 700;
text-transform: uppercase;
letter-spacing: 1px;
padding: 8px 15px;
border-radius: 5px;
border: 1px solid var(--color);
overflow: hidden;
position: relative;
z-index: 1;
transition: all 0.35s;
}
.btn:hover,
.btn:focus{
color:#fff;
transition-delay: 0.35s;
}
.btn:before{
content: "";
background: var(--color);
width: 15%;
height: 100%;
transform: rotateZ(-45deg) translateX(-50%) translateY(-50%);
position: absolute;
top: 0;
left: 0;
z-index: -1;
transition: all 0.3s;
}
.btn:hover:before{ animation: animate 0.6s forwards; }
@keyframes animate{
10% {
width: 0;
transform: rotateZ(-45deg) translateX(-100%) translateY(-50%);
}
20% {
width: 0;
transform: rotateZ(0) translateX(-100%) translateY(85%);
}
60% {
width: 100%;
transform: rotateZ(0) translateX(0%) translateY(85%);
}
100% {
width: 100%;
transform: rotateZ(0) translateX(0%) translateY(0%);
}
}
@media only screen and (max-width: 767px){
.btn{ margin-bottom: 30px; }
}