@media screen and (max-width: 800px) {

    body {
        padding: 0 15px;
        background: none;
    }

    img {
        max-width: 100%;
        height: auto;
    }

    table {
        max-width: 100%;
        border-collapse: collapse;
    }

    table, tbody, tr, th, td {
        display: block;
        width: 100%;
        height: auto;
    }

    td {
        text-align: center;
        box-sizing: border-box;
        margin: 0 !important;
    }

    iframe {
        width: 100%;
    }

}