.svg-responsive {
    display: inline-block;
    position: relative;
    width: 100%;
    max-width:612px;
    padding-bottom: 100%;
    vertical-align: middle;
    overflow: hidden; 

}

    
.svg-responsive svg {
    display: inline-block;
    position: absolute; 
    top: 0; 
    left: 0;
}