body {
    width: 100%;
    height: 100%;
    padding-top: 20px;
    padding-bottom: 0px;
    padding-left: 0px;
    padding-right: 0px;
    margin: 0px;
}
.dates {
    margin: 0px;
    padding: 0px;
}
.date {
    margin-top: 20px;
    margin-bottom: 20px;
    margin-left: auto;
    margin-right: auto;
    padding: 10px;
    width: 600px;
    text-align: center;
    background-color: #f5f5f5;
    color: #333333;
}

@media only screen and (max-device-width: 480px) {
    body {
        font-size:2.0em;
        line-height: 1.2em;
    }
    
    .date {
        margin-top: 20px;
        margin-bottom: 20px;
        padding: 10px;
        width: 100%;
        background-color: #f5f5f5;
        color: #333333;
    }
}