#main {
    max-width: 100%; /* override */
}

.middle {
    box-sizing: border-box;
    width: 33.33%;
    max-width: 37em;
    padding: 1em 20px 1em 1em;
    min-width: 370px;
    display: inline-block;
}

.left {
    box-sizing: border-box;
    width: 33.33%;
    min-width: 370px;
    padding-right: 20px;
    text-align: center;
    float: left;
}

.left div {
    margin-top: 30px;
}

.right {
    box-sizing: border-box;
    width: 33.33%;
    min-width: 350px;
    text-align: center;
    float: right;
}

.right div {
    margin-top: 30px;
}

img {
    border: 0px;
}