.h1{

    color:green;
    font-family: Calibri, "sans-serif";
    font-size: 30px;
    font-weight: lighter;
    text-align: center;
}

.center{

    display: block;
    margin-top: 10em;
    margin-right: auto;
    margin-left: auto;
    margin-bottom: 0;
    text-align: center;
}

.link a{

    text-decoration: none;
    color:green;
    font-size: 24px;
    margin-top:3em;
    margin-left: auto;
    margin-right:auto;
    display: block;
    text-align: centeR;
}