.fill-btn{color:#000;cursor:pointer;background:#fff;border:none;border-radius:10px;padding:10px 12px;font-size:18px;font-weight:500;transition:color .3s;position:relative;overflow:hidden;box-shadow:2px 0 8px #0000001f}.fill-btn:before{content:"";top:var(--y);left:var(--x);z-index:0;opacity:0;background:#394978;border-radius:50%;width:0;height:0;transition:width .45s,height .45s,opacity .45s;position:absolute;transform:translate(-50%,-50%)}.fill-btn:hover:before{opacity:1;width:350px;height:350px}.fill-btn>*{z-index:2;color:#000;transition:color .35s;position:relative}.fill-btn:hover>*{color:#fff!important}