.app-icon {
    background-image: url(dmacademy_logo.png);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 50%;
    background-color: transparent;
    border-radius: 50px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}