#canvas-debug,
#canvas-output{
    box-shadow: 0 1px 6px 0 rgba(0,0,0,.12);
    background-color: white;
    margin: 20px 0 0 15px;
}

#controls button {
    margin: 0;
}


#canvas-debug,
#canvas-output{
    box-shadow: 0 1px 6px 0 rgba(0,0,0,.12);
    background-color: white;
    margin: 20px 0 0 15px;
}

#controls button {
    margin: 0;
}

@media only screen and (max-width : 768px) {
    #controls > div:nth-child(n+2) button{
        margin-top: 10px;
    }
}
Add space between buttons on xs view
Add space between buttons on xs view
