Modern CSS Layout

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Modern CSS Layout

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💖 Drums 💖 CSS 💖 Windmills

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css-irl.info

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Multi-column Flexbox Custom properties Container queries aspect-ratio min() / max() / clamp() Grid :has() Logical properties Viewport units Subgrid Writing modes

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“ Intrinsic web design Jen Simmons ”

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Flex or Grid?

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Flexbox One dimension Flexible layout Two dimensions Strict alignment Gap support Layout based on content Layout based on context Grid

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centred

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Flexbox

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Grid 1fr auto 1fr

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Flexbox

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codepen.io/michellebarker/pen/qBxNWZP

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grid-template-columns: 1fr repeat(10, minmax(0, 6rem)) 1fr; codepen.io/michellebarker/pen/qBxNWZP

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grid-template-columns: 1fr repeat(10, minmax(0, 6rem)) 1fr; codepen.io/michellebarker/pen/qBxNWZP

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codepen.io/michellebarker/pen/qBxNWZP

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Aspect-ratio

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Before ☹ .aspect-box { position: relative; } .aspect-box::before { display: block; content: ”; width: 100%; padding-bottom: calc(100% / (var(—-aspect-ratio, 3 / 2))); } .aspect-box > :first-child { position: absolute; top: 0; right: 0; bottom: 0; left: 0; } After ☺ .aspect-box { aspect-ratio: 3 / 2; }

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Demo codepen.io/michellebarker/pen/ExEzvBx

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min, max and clamp min(1rem, 2vw) max(1rem, 2vw)

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min, max and clamp clamp(1rem, 2vw, 3rem)

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Demo codepen.io/michellebarker/pen/ExEzvBx

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Size Viewport width

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utopia.fyi

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Flex or Grid?

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Demo codepen.io/michellebarker/pen/poVvabe

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Container-relative units cqw query container width cqh query container height cqi query container inline size cqb query container block size cqmin smallest of ‘cqi’ or ‘cqb’ cqmax largest of ‘cqi’ or ‘cqb’

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Browser support

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container-query-poly ll fi fi github.com/GoogleChromeLabs/container-query-poly ll

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Subgrid

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.card { grid-row: span 3; display: grid; gap: 0; grid-template-rows: subgrid; }

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.card { grid-row: span 3; display: grid; gap: 0; grid-template-rows: subgrid; }

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No subgrid? No problem!

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.card { /* Code for browsers without subgrid / } @supports (grid-template-columns: subgrid) { .card { grid-template-rows: subgrid; / Code for browsers that support subgrid */ } }

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:has() (the parent selector)

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.component blockquote { grid-column: 2 / span 4; grid-row: 2 / span 2; text-align: center; }

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.component:has(img) img { grid-row: 1 / span 2; grid-column: 1 / span 3; } .component:has(img) blockquote { grid-row: 2 / span 2; grid-column: 3 / span 4; text-align: left; }

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Demo codepen.io/michellebarker/pen/poVvabe

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wpt.fyi/interop-2022

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🥰 Thank you @MicheBarks / @CSSInRealLife