Most block-level elements will automatically grow/shrink to fit their parent, but media elements like are special: they're known as replaced elements, and they don't follow the same rules. This is done to keep large images from overflowing, if they're placed in a container that isn't wide enough to contain them. If you've ever had a mysterious 4px gap that wasn't margin or padding or border, it was probably the “inline magic space” that browsers add with line-height.īy setting display: block on all images by default, we sidestep a whole category of funky issues. If we try to use an inline element in our layout, though, weird things happen. Typically, I treat images the same way I treat paragraphs or headers or sidebars they're layout elements. This doesn't jive with how I use images most of the time. This implies that they should be used in the middle of paragraphs, like or. So here's a weird thing: images are considered 'inline' elements. We need to explicitly turn it off, by setting -webkit-font-smoothing to antialiased. I'm guessing they realized that it was doing more harm than good on modern hardware.Ĭonfusingly, MacOS browsers like Chrome and Safari still use subpixel antialiasing by default.

In MacOS Mojave, released in 2018, Apple disabled subpixel antialiasing across the operating system. If you look at a modern monitor under a microscope, you won't see an orderly grid of R/G/B lines anymore. The physical arrangement of pixel LEDs has changed as well. Today's pixels are much smaller, invisible to the naked eye. Here's the problem: that article was written in 2012, before the era of high-DPI “retina” displays. You may have read a popular blog post, Stop “Fixing” Font Smoothing, that advocates against switching to “antialiased”. In the past, this was seen as an accessibility win, because it improved text contrast. This is a technique that aims to make text easier to read, by leveraging the R/G/B lights within each pixel.

On MacOS computers, the browser will use “subpixel antialiasing” by default. Alright, so this one is a bit controversial.

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