#btn-university-video{
    position: relative;
}


#btn-university-video:after{
    content: "";
    width: 50px;
    height: 41px;
    background: url("/wp-content/themes/ontario-vs/inc/courses/css/demo-lesson.png");
    background-position: center;
    background-size: cover;
    position: absolute;
    top: 2px;
    left: 75%;
    transition: all .55s ease-out;
}
#btn-university-video:hover:after{
    content: "";
    width: 50px;
    height: 41px;
    background: url("/wp-content/themes/ontario-vs/inc/courses/css/demo-lesson-hover.png");
    background-position: center;
    background-size: cover;
    position: absolute;
    top: 2px;
    left: 75%;
}

@media (min-width: 48em) {
    #btn-university-video:after{
        left: 60%;
    }
    #btn-university-video:hover:after{
        left: 60%;
    }
}

@media (min-width: 64em) {
    a.btn-university,.btn-university{
        margin-right: 20px;
        width: 40%;
    }
    #btn-university-video:after{
        left: 75%;
    }
    #btn-university-video:hover:after{
        left: 75%;
    }
}