#Full justify text css mac
After running some tests, it seems that browsers use the HHead Ascent/ Descent values on Mac OS, and Win Ascent/ Descent values on Windows (these values may differ!). the ascender is 1100 and the descender is 540.Let’s take the Catamaran font and open it in FontForge to get metrics: in the browser, relative units are scaled to fit the desired font-size.Note that some values can bleed outside of the em-square. based on its relative units, metrics of the fonts are set (ascender, descender, capital height, x-height, etc.).But it can also be 1024, 2048 or anything else. This square uses relative units and is generally set at 1000 units. a font defines its em-square (or UPM, units per em), a kind of container where each character will be drawn.The reason lays down inside the font itself. Using the same font-size with different font-families produce elements with various heights: Different font-families, same font-size, give various heightsĮven if we’re aware of that behavior, why font-size: 100px does not create elements with 100px height? I’ve measured and found these values: Helvetica: 115px, Gruppo: 97px and Catamaran: 164px Elements with font-size: 100px have height that varies from 97px to 164pxĪlthough it seems a bit weird at first, it’s totally expected. Look at this simple HTML code, a tag containing 3, each with a different font-family: We know that unitless line-height is font-size relative, but the problem is that font-size: 100px behaves differently across font-families, so is line-height always the same or different? Is it really between 1 and 1.2? And vertical-align, what are its implications regarding line-height?ĭeep dive into a not-so-simple CSS mechanism… Let’s talk about font-size first OK, but what normal is? We often read that it is (or should be) 1, or maybe 1.2, even the CSS spec is unclear on that point. They really are complex, maybe the hardest ones, as they have a major role in the creation of one of the less-known feature of CSS: inline formatting context.įor example, line-height can be set as a length or a unitless value 1, but the default is normal.
#Full justify text css how to
So simple that most of us are convinced to fully understand how they work and how to use them. Items will wrap onto multiple lines, from bottom to top.Line-height and vertical-align are simple CSS properties. Items will wrap onto multiple lines, from top to bottom. Items are stretched to fill the container. Items are aligned so that their baselines align. Items are packed toward the end on the cross axis. Items are packed toward the start on the cross axis. Items are distributed so that the spacing between any two items is equal. Items are evenly distributed on the main axis. Items are evenly distributed on the main axis with equal space around them. Items are packed toward the end on the main axis. Items are packed toward the start on the main axis. Breaks lines as necessary to fill line boxes.Ĭollapses whitespace as for normal, but suppresses line breaks (text wrapping) within text. Newline characters in the source are handled as other whitespace. Text should be spaced to line up its left and right edges to the left and right edges of the line box, except for the last line. The inline contents are centered within the line box. The same as text-right if direction is left-to-right and text-left if direction is right-to-left. The same as text-left if direction is left-to-right and text-right if direction is right-to-left. The inline contents are aligned to the right edge of the line box. The inline contents are aligned to the left edge of the line box. Lorem ipsum dolor sit amet, consectetur adipiscing elit.