body{
    margin-left: auto;
    margin-right: auto;
    max-width:750px;
    width:calc(100% - 2rem);
}
main{
    text-align:center;
}
main hgroup{
    border: 1px solid #999;
    border-radius: 14px;
    color: #666;
    display: block;
    letter-spacing: 6px;
    padding: 4rem 1.5rem;
    margin-top: 2rem;
}