@media only screen and (orientation: portrait) and (min-device-width: 320px) and (max-device-width: 500px) {

    .s-arc-rules-title {
        font-size: 16px;
    }
    .s-arc-rules-title-mrg {
        margin-bottom: 5px;
    }
    .s-arc-rules-title-old {
        margin-top: 5px;
    }

}