An easy way to customize a websites appearance is to add a stylesheet via a bookmarklet. For example to set the font to Arial, this works: javascript:document.

An easy way to customize a websites appearance is to add a stylesheet via a bookmarklet. For example to set the font to Arial, this works: javascript:document.body.insertAdjacentHTML('beforeend','<style>*{font-family: arial !important;}</style>') Using "mono" instead of "arial" also makes for an interesting Twitter experience.