section {
    background: linear-gradient(rgba(255,255,255,0.85), rgba(255,255,255,0.85)), url('../img/pat2@2x.png'), url('../img/pat2@2x.png');
    background-position: left top, right top;
    background-repeat: no-repeat, repeat-y, repeat-y;
    background-size: auto, auto 550px, auto 550px;
}

@media (max-width: 768px) {
    .patterned-bg {
        background: none;
    }
}