.btn{background:linear-gradient(0deg,#fe4c04,#ff803d);border-radius:120px;color:#fff;overflow:hidden;position:relative;transition:all .5s;z-index:1}.btn:before{background:linear-gradient(0deg,#a3000099,#a3000099),linear-gradient(177deg,#fe0404 12.71%,#f99e00 171.74%);content:"";inset:0;opacity:0;position:absolute;transition:opacity .5s ease;z-index:-1}.btn:hover:before{opacity:1}