.Prototype {
    .Main {
        &--Leaderboard {
            @include media(large-only) {
                &:before {
                    position: absolute;
                    top: rem-calc(-95); // 5px spacer
                    left: 50%;
                    transform: translate(-50%);
                    content: url(http://dummyimage.com/leaderboard/f0f/f);
                    opacity: .5;
                }
            }
        }

        &--Skyscraper {
            @include media(large-only) {
                &:after {
                    position: absolute;
                    top: 0;
                    right: 0;
                    margin-left: rem-calc(5); // 5px spacer
                    content: url(http://dummyimage.com/skyscraper/f0f/f);
                    opacity: .5;
                }
            }
        }

        &--SkyscraperWide {
            @include media(large-only) {
                &:after {
                    position: absolute;
                    top: 0;
                    right: 0;
                    margin-left: rem-calc(5); // 5px spacer
                    content: url(http://dummyimage.com/wideskyscraper/f0f/f);
                    opacity: .5;
                }
            }
        }
    }
}