Whereas ex and ch are contextual to the font family chosen.

Ch font size. Italic or bold can change the width of the character. However, if the content consists of multiple languages (e.g. Set font size with em to allow users to resize the text (in the browser menu), many developers use em instead of pixels.

In css specifications and on the property pages here on mdn you will be able to spot value types as they will be surrounded by angle brackets, such as or.</p> Hold down ctrl (windows) or ⌘ command (mac). 1em is equal to the current font size.

Your landing page should always be the height of the viewport/window. Set a max width using the ch unit to limit text element width by character count. Web on the home tab, click the font size you want in the font size box.

Web the original answer here is actually incorrect. The unit you're looking for is ch. Web the “ch” unit would be useful for most asian languages like chinese and japanese as the width of each asian character is fixed.

Example set different length values, using px (pixels): Web for example, if you set a paragraph’s max width to 60ch, that line will never be longer than the equivalent length of 60 “0” characters for that font, in that font size. In css, an em is a relative size but is independent of the font family chosen.

Change font and image size. You can also type in any size you want in multiples of.1, such as 10.3 or 105.7. For example, the relative font size of an element may be calculated using the parent element's font size.