LAYOUT / 266
Visual hierarchy
大きさで読む順序をつくる
一つの要素だけを大きくし、同じ内容の中へ視覚的な優先順位をつくります。
見本の中を操作して変化を試してください。
ひとつ試すなら
主役の大きさを変え、最初に見てしまう場所を観察する。
こんなときに
カードや読み物の構成、情報の見せ方。
仕組みと使い方
主役の大きさを変え、最初に見てしまう場所を観察する。
対応状況は使用する機能と端末により異なります。公式資料も参照してください。
表現名には通称や説明のための名称を含みます。デモと掲載コードはこの図鑑のオリジナルです。作者について
実装コードを見る
<!doctype html><html lang="ja"><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><style>body{margin:0;min-height:330px}.sample{width:100%;height:100%;min-height:330px;padding:12px!important;display:flex!important;flex-direction:column;justify-content:center;align-items:center;gap:8px!important;background:#f0efeb;color:#232323;font-family:Arial,Meiryo,sans-serif;overflow:hidden;box-sizing:border-box}.sample *{box-sizing:border-box}.lab-scene{width:100%;max-width:430px;height:140px;position:relative;overflow:hidden;border-bottom:1px solid #ccc}.lab-scene:has(canvas){max-width:320px;height:auto;aspect-ratio:16/9;flex-shrink:0}.lab-canvas{display:block;width:100%;height:100%!important;outline-offset:-3px}.lab-canvas:focus-visible{outline:2px solid #222}.lab-controls{width:100%;max-width:390px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 14px}.lab-controls label{display:grid;grid-template-columns:1fr auto;gap:2px;font-size:11px;min-width:0}.lab-controls input{grid-column:1/-1;width:100%;min-width:0;margin:0;accent-color:#333;height:30px}.lab-controls output{font-variant-numeric:tabular-nums}.lab-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:center}.sample .lab-actions button{color:inherit;font:11px Arial,Meiryo,sans-serif;border:1px solid #aaa;border-radius:99px;background:transparent;min-height:44px;padding:8px 12px;cursor:pointer}.lab-status{font-size:10px;line-height:1.4;min-height:14px;margin:0;text-align:center}.lab-note{font-size:9px;line-height:1.3;color:#666;margin:0;text-align:center}.lab-actions button:focus-visible{outline:2px solid #222;outline-offset:2px}@media(prefers-reduced-motion:reduce){.sample *{animation-play-state:paused!important;transition:none!important}}.lab-scene{display:grid;place-items:center}.layout-board{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px;width:100%;padding:8px;height:130px}.layout-board>div{border:1px solid #aaa;background:#f8f8f5;padding:8px;min-width:0;overflow:hidden}.layout-board b{font:bold 22px Arial;display:block}.layout-board span{font:8px Arial;display:block;margin-top:4px}.changed .layout-board>div:nth-child(2n){background:#333;color:white}.layout-board>div:first-child b{font-size:calc(var(--weight,35)*1px)}</style><div class="sample"><div class="lab-scene"><div class="layout-board"><div><b>01</b><span>something good.</span></div><div><b>02</b><span>something good.</span></div><div><b>03</b><span>something good.</span></div><div><b>04</b><span>something good.</span></div><div><b>05</b><span>something good.</span></div><div><b>06</b><span>something good.</span></div></div></div><div class="lab-controls"><label>先頭の文字サイズ px<output>35</output><input aria-label="先頭の文字サイズ px" type="range" min="15" max="45" step="1" value="35" data-key="weight"></label></div><div class="lab-actions"><button data-play>停止</button><button data-reset>明暗を入れ替える</button></div><p class="lab-status" role="status"></p></div><script>const lab=(function runDomLab(root,cfg,setup){
const abort=new AbortController(),values=Object.fromEntries(cfg.controls.map(c=>[c.key,c.value])),mq=matchMedia('(prefers-reduced-motion:reduce)');let auto=!mq.matches;
const on=(el,event,fn)=>el.addEventListener(event,fn,{signal:abort.signal});
const api=setup({root,values,kind:cfg.kind,on,reduced:mq.matches})||{};
for(const input of root.querySelectorAll('[data-key]'))on(input,'input',()=>{values[input.dataset.key]=Number(input.value);input.closest('label').querySelector('output').textContent=input.value;api.update?.()});
const play=root.querySelector('[data-play]');on(play,'click',()=>{auto=!auto;api.setAuto?.(auto);for(const a of root.querySelector('.lab-scene').getAnimations({subtree:true}))auto?a.play():a.pause();play.textContent=auto?'停止':'再生';play.setAttribute('aria-pressed',String(!auto))});
const reset=root.querySelector('[data-reset]');on(reset,'click',()=>api.action?.());
on(document,'visibilitychange',()=>api.setAuto?.(auto&&!document.hidden));
api.update?.();if(cfg.static)play.hidden=true;
return {setAuto(on){auto=on&&!mq.matches;api.setAuto?.(auto);for(const a of root.querySelector('.lab-scene').getAnimations({subtree:true}))auto?a.play():a.pause();play.textContent=auto?'停止':'再生'},destroy(){abort.abort();api.destroy?.()}};
})(document,{"kind":"layout-hierarchy","controls":[{"key":"weight","label":"先頭の文字サイズ px","min":15,"max":45,"value":35,"step":1}],"static":true,"action":"明暗を入れ替える"},function editorial({root,values:v,kind}){const stage=root.querySelector('.lab-scene'),status=root.querySelector('.lab-status');let changed=false;return {update(){for(const[k,x]of Object.entries(v))stage.style.setProperty('--'+k,String(x));if(kind==='type-variable'){root.querySelector('.editorial-word').style.fontVariationSettings=`"wght" ${v.weight}`;}if(kind==='texture-grain')root.querySelector('feTurbulence').setAttribute('baseFrequency',String(v.frequency));if(kind==='layout-intrinsic')root.querySelector('.layout-board').style.width=v.width+'%';status.textContent=kind==='type-variable'?'Inter variable / wght '+v.weight:'';},action(){changed=!changed;stage.classList.toggle('changed',changed);if(kind==='type-variable'){root.querySelector('.editorial-word').style.fontVariationSettings=`"wght" ${changed?400:v.weight}`;status.textContent=changed?'比較 / wght 400':'選んだ太さ / wght '+v.weight;}else status.textContent=changed?'変化後':'元の状態';}}});addEventListener('pagehide',()=>lab.destroy(),{once:true});</script></html>