div.button-wrapper-outer {
    text-align: center;
    font-size:300%;
    line-height: 3em;
}

div.button-wrapper-inner {
    display: inline-block;
}

div.button-wrapper-inner input {
    font-size:100%;
    border:5px solid #bbbbbb;
    border-radius:1em;
    padding:0.5em;
    margin: 0.1em 0 0.1em;
    display: inline-block;
}

div.button-wrapper-inner input:hover {
    cursor:pointer;
}