* {
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

main {
    padding: 10px;
    border-radius: 25px;
    box-shadow: rgba(100, 100, 111, 0.2) 0px 7px 29px 0px;
    text-align: center;
}

a {
    display: block;
    margin-top: 25px;
    padding: 5px;
    font-size: 16pt;
    border-radius: 15px;
    box-shadow: rgba(100, 100, 111, 0.2) 0px 0px 15px 0px;
}

a p {
    font-size: 24pt;
    margin: 5px;
}

a p+p {
    font-size: 12pt;
}

a:link {
    text-decoration: none;
    color: black;
}

a:visited {
    text-decoration: none;
    color: black;
}

a:hover {
    background-color: lightgray;
}

@media only screen and (min-width: 400px) {
    main {
        width: 400px;
        max-width: 960px;
        margin-top: 10px;
        margin-left: auto;
        margin-right: auto;
        margin-bottom: 0;
    }
}