.mapillary-js {
    background-color: #000;
    width: 320px;
    height: 240px;
    position: relative;
}
.mapillary-js {
    background-color: #000;
    width: 320px;
    height: 240px;
    position: relative;
}

/*
// Make the viewer responsive and retain 4/3 ratio
.mapillary-js {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
}

.mapillary-js > canvas {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}
*/

Add commented out responsive styles which retain the aspect ratio
Add commented out responsive styles which retain the aspect ratio
