/* setting font awesome base class size */
/*i[class^="fa-"],
span[class^="fa-"] {
    font-size: 2.5em;
}
*/
.avatar {
    position: relative;
    display: inline-block;
    width: 3.125rem;
    height: 3.125rem;
    border-radius: .5rem;
}

    .avatar.avatar-4x3 {
        width: 5.6666666667rem;
        height: auto;
        border-radius: 0;
    }