.thumbnail {
    width: 100%;
    position: relative;
    padding-top: 75%;    
}

.content { 
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    text-align: center;
}

.large-icon i {
    color: white;
}

.edit {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    line-height: 2.5rem;
}