#ec-doc-main {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
}


@media (max-width: 600px) {
    #ec-doc-main {
        -webkit-overflow-scrolling: touch;
        position: static;
    }

    #ec-doc-nav {
        position: static;
        margin-bottom: 0;
    }
}