Also, providing the table does not fill or exceed the width of the available space (e.g. Thanks Ryno for your feedback and the link, will check that out! HTML Arrows is shared by Toptal Designers, the marketplace for hiring elite UI, UX, and Visual designers, along with top developer and finance talent.Discover why top companies and start-ups turn to Toptal to hire freelance designers for their mission-critical projects. The 16:9 aspect ratio corresponds to a height which is 56.25% of the width. .square { width: 50%; height: 50%; } The elementâs width is calculated as a percentage of its parentâs width, while its height is calculated as a percentage of its parentâs height. Even for height values, I may have used a 100% value for a hack, but nothing else. i.e. # Editor Width. It will override any style set in the HTML