1. Insert HTML code block into page

2. Copy code below into HTML block:

<style>
.couponwheel_popup_wheel_container
 {
    left: auto;
    width: 100%;
}

@media screen and (min-width: 40em) {
    .couponwheel_wheel_container {
        left: auto;
        width: 100%;
    }
}
</style>