.subscribe-close-button{
    display:block;
    position: sticky;
    background:#111;
    border-radius:5px;
    border: none;
    width:min(85%,400px);
    padding:12px 16px;
    margin: 0 auto;
    font-size:1.05rem;
    color:#fff;
    bottom: 30px;
    cursor: pointer;
}