#oa-push-icon {
    background-color: #FF5555;
    opacity: 0.9;
    width: 48px;
    height: 48px;
    padding: 8px;
    cursor: pointer;
    position: fixed;
    left: 10px;
    bottom: 10px;
    z-index: 9999;
    box-shadow: 0 2px 4px -1px rgba(0,0,0,.2),0 4px 5px 0 rgba(0,0,0,.14),0 1px 10px 0 rgba(0,0,0,.12);
}

@media (max-width: 990px) {
    #oa-push-icon {
        bottom: 50px;
    }
}