.fill-button{
    position:absolute;
    left:50%;
    top:50%;
    transform: translate(-50%,-50%);
}

.btn {
    background-color:#FFAA33!important;
    border: none;
    color: #36454F!important;
    cursor: pointer;
    outline: none;
    position: relative;
    -webkit-transition: all 0.2s;
    -moz-transition: all 0.2s;
    transition: all 0.2s;
}
.btn {
    border: 0px solid red;
    color: red;
}
.btn:hover {
    color:black!important;
    box-shadow: rgba(9, 30, 66, 0.25) 0px 4px 8px -2px, rgba(9, 30, 66, 0.08) 0px 0px 0px 1px;
    scale:1.03;
}
.btn::after {
    content: '';
    position: absolute;
    z-index: 66;
    -webkit-transition: all 0.2s;
    -moz-transition: all 0.2s;
    transition: all 0.2s;
}
.btn:after {
    width: 0%;
    height: 100%;
    top: 0;
    left: 0;
    background: rgba(255, 245, 238, 0.1);
    border-radius:inherit;
}
.btn:hover:after, .btn:active:after {
    width: 100%;
}