To make images resize responsively to page width, you can add the class
responsive-img to your image tag. It will now have a
max-width: 100% and
To make images appear circular, simply add
class="circle" to them
To make your embeds responsive, merely wrap them with a containing div which has the class
If your video does not have video controls, add the
no-controls class to the video container.
To make your HTML5 Videos responsive just add the class
responsive-video to the video tag.