TYPOGRAPHY / 192
Masked line reveal
行の内側から文字が現れる
行ごとに表示範囲を区切り、その外から文字を動かすことで、文字がせり上がって見えます。
見本の中を操作して変化を試してください。
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:300px}.sample{box-sizing:border-box;min-height:210px;width:100%;height:100%;display:grid;place-items:center;align-content:center;gap:18px;padding:24px;background:#efeee9;color:#202020;font-family:Arial,Meiryo,sans-serif;overflow:hidden}.sample *{box-sizing:border-box}.sample button{min-height:40px;border:1px solid #777;border-radius:999px;background:transparent;padding:9px 17px;font:12px Arial,Meiryo,sans-serif;color:inherit;cursor:pointer}.sample label{font-size:11px;display:grid;gap:8px;width:min(100%,220px)}.sample input{width:100%;accent-color:#222}.sample small{font-size:10px;line-height:1.6}.sample :focus-visible{outline:2px solid #222;outline-offset:4px}@media(prefers-reduced-motion:reduce){.sample *{animation:none!important;transition:none!important}}.line-stack{width:100%;font-size:clamp(28px,6vw,46px);font-weight:800;letter-spacing:-2px;line-height:1.1}.line-stack>div{overflow:hidden;padding:2px}.line-stack b{display:block;transition:transform .75s cubic-bezier(.2,.8,.2,1)}.line-stack>div+div b{transition-delay:.12s}.line-stack.changed b{transform:translateY(115%)}</style><div class="sample"><div class="line-stack" aria-label="FLYING BRAIN"><div><b>FLYING</b></div><div><b>BRAIN</b></div></div><button data-toggle=".line-stack" aria-pressed="false">表示を切り替える</button></div><script>const controller=(function controls(root){const abort=new AbortController();for(const input of root.querySelectorAll('[data-target]')){const update=()=>{const target=root.querySelector(input.dataset.target);if(input.dataset.attr)target.setAttribute(input.dataset.attr,input.value+(input.dataset.unit||''));else target.style.setProperty(input.dataset.prop,input.value+(input.dataset.unit||''));const output=input.closest('label')?.querySelector('output');if(output)output.textContent=input.value};input.addEventListener('input',update,{signal:abort.signal});update()}for(const button of root.querySelectorAll('[data-toggle]'))button.addEventListener('click',()=>{const target=root.querySelector(button.dataset.toggle),on=target.classList.toggle('changed');button.setAttribute('aria-pressed',String(on));},{signal:abort.signal});return {destroy(){abort.abort()},setAuto(){}}})(document);addEventListener('pagehide',()=>controller.destroy(),{once:true});</script></html>