@media screen and (max-width: 640px) {
    .uc-onzap{
        width: 80px !important;
        height: 80px !important;
    }
    .t-body .yButton.right {
        right: 15px !important;
    }
    .t-body .yButton.bottom {
        bottom: 70px !important;
    }
    .yButton .yButtonBackground, .yButton{
        width: 80px !important;
        height: 80px !important;
    }
    .yButton .yButtonText{
        font-size: 12px !important;
        top: 17px !important;
        left: -4px !important;
        line-height: 20px !important;
    }

}