Responsive Main Menu for Knowledge Base
Complete a responsive top menu in a knowledge base scenario: includes real content, actionable controls, clear status feedback, and cross-size layouts.
With JavaScript enabled, you can edit, run, and save this example. The fixed source is as follows:
<!doctype html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Responsive Main Menu for Knowledge Base</title>
<style>
:root { --ink:#30231f; --paper:#f9efe5; --accent:#8b6fb0; --secondary:#d7a971; --line:color-mix(in srgb, var(--ink) 18%, transparent); --shadow:0 24px 60px color-mix(in srgb, var(--ink) 16%, transparent); color-scheme:light; }
* { box-sizing:border-box; }
html { min-width:320px; background:var(--paper); }
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button,input,select,textarea { color:inherit; font:inherit; }
button,[role="button"],input,select,textarea { accent-color:var(--accent); }
button { cursor:pointer; }
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible { outline:3px solid var(--accent); outline-offset:3px; }
[hidden] { display:none !important; }
@media (max-width:700px) { .mast h1 { line-height:1.08 !important; letter-spacing:-.035em !important; overflow-wrap:anywhere; } }
@media (prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto !important; animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; } }
.page{width:min(1040px,calc(100% - 36px));margin:auto;padding:64px 0}.mast{display:grid;justify-items:center;text-align:center;border-block:3px double var(--accent);padding:26px;gap:20px;margin-bottom:32px}.mast h1{font-family:Didot,"Songti SC",serif;font-weight:700;font-size:clamp(38px,8vw,86px);letter-spacing:.035em;margin:0;line-height:1}.eyebrow{display:block;color:var(--accent);font:800 11px/1 ui-monospace,monospace;letter-spacing:.3em}.intro{max-width:600px;margin-inline:auto;line-height:1.8}.scenario{padding:8px 26px;border-inline:1px solid var(--accent);letter-spacing:.16em}.demo{border:4px double var(--accent);border-radius:0;clip-path:polygon(24px 0,calc(100% - 24px) 0,100% 24px,100% calc(100% - 24px),calc(100% - 24px) 100%,24px 100%,0 calc(100% - 24px),0 24px);position:relative;min-height:440px;overflow:hidden;padding:clamp(28px,5vw,60px);background:var(--paper)}@media(max-width:700px){.page{width:calc(100% - 20px);padding:24px 0}.mast{padding:18px}.demo{padding:18px}}
.panel{padding:22px;border:1px solid var(--line);background:color-mix(in srgb,#fff 58%,transparent)}.stack{display:grid;gap:15px}.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.action{min-height:44px;padding:10px 17px;border:1px solid var(--ink);border-radius:999px;background:transparent}.action.primary,.action.is-active{color:var(--paper);background:var(--accent)}.muted{opacity:.68}.status{min-height:24px;margin-top:15px;color:var(--accent);font-weight:800}.metric{font-size:clamp(30px,6vw,58px);font-weight:900}.meter{height:9px;overflow:hidden;border-radius:999px;background:color-mix(in srgb,var(--ink) 12%,transparent)}.meter>i{display:block;height:100%;background:var(--accent)}.chip{padding:6px 9px;border:1px solid var(--line);border-radius:999px;font-size:12px}
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.responsive-nav-demo{overflow:hidden;border:1px solid var(--line);border-radius:22px;background:var(--paper)}.responsive-nav{display:flex;gap:20px;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}.nav-brand{margin-right:auto;color:inherit;font-size:20px;font-weight:900;text-decoration:none}.nav-links{display:none;gap:5px}.nav-links.is-open{display:flex}.nav-links a{padding:9px 12px;border-radius:9px;color:inherit;text-decoration:none}.nav-links a[aria-current="page"]{color:var(--paper);background:var(--ink)}.nav-toggle{display:flex;gap:8px;padding:9px 12px;border:1px solid var(--line);border-radius:9px;background:transparent}.nav-preview{min-height:290px;padding:clamp(28px,6vw,66px)}.nav-preview h2{font-size:clamp(34px,7vw,74px)}@media(max-width:660px){.responsive-nav{position:relative;flex-wrap:wrap}.nav-links{flex-basis:100%;flex-direction:column}.nav-links a{width:100%}}.workflow-session{display:grid;gap:14px}.session-command{display:grid;grid-template-columns:1fr auto minmax(170px,.45fr) auto;gap:16px;align-items:end;padding:18px;border-block:4px double var(--ink)}.session-command h2{margin:.2em 0}.session-command output{font:900 clamp(28px,5vw,54px)/1 ui-monospace,monospace}.session-command label{display:grid;grid-template-columns:1fr auto;gap:7px;font-size:12px}.session-command input{grid-column:1/-1;width:100%}#workflowSessionProgress{height:12px;overflow:hidden;border-radius:2px;background:var(--line)}#workflowSessionProgress i{display:block;width:0;height:100%;background:var(--accent)}.session-stage{min-width:0;transition:filter .25s,transform .25s}.session-stage[data-session-phase="running"]{transform:translateY(-3px)}.session-stage[data-session-phase="paused"]{filter:grayscale(.65)}.session-stage[data-session-phase="complete"]{filter:contrast(.78);opacity:.72}.session-log{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start}.session-log ol{display:flex;flex-wrap:wrap;gap:7px;padding:0;margin:0;list-style:none}.session-log li{padding:5px 8px;border:1px solid var(--line);font-size:12px}@media(max-width:900px){.session-stage{order:-1}.session-command{grid-template-columns:1fr auto}.session-command label{grid-column:1/-1}.session-log{grid-template-columns:1fr}}
</style>
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<body data-aesthetic="art-deco" data-composition="gallery-frame">
<main class="page">
<header class="mast"><div><span class="eyebrow">art-deco / Responsive primary menu / BEGINNER</span><h1>Responsive Main Menu for Knowledge Base</h1><p class="intro">Complete a responsive top menu in a knowledge base scenario: includes real content, actionable controls, clear status feedback, and cross-size layouts.</p></div><span class="scenario">Knowledge Base</span></header>
<figure class="composition-gallery"><section class="demo" aria-label="Knowledge Base Responsive Main Menu Interaction Area"><div class="workflow-session"><header class="session-command"><div><span class="eyebrow">Knowledge Base SESSION</span><h2>Knowledge Path Timer</h2></div><output id="workflowSessionClock">00:45</output><label>Round Duration<input id="workflowSessionLength" type="range" min="15" max="90" step="15" value="45"><span>sec</span></label><button id="workflowSessionToggle" class="action primary" type="button">Enter Knowledge</button></header><div id="workflowSessionProgress" role="progressbar" aria-label="Knowledge Path Progress" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><i></i></div><section id="workflowCore" class="workflow-core session-stage" data-session-phase="ready" tabindex="-1"><!-- 11DZ_CORE_START:navigation-menus-responsive-menu --><div class="responsive-nav-demo"><nav class="responsive-nav" aria-label="Knowledge base main navigation"><a class="nav-brand" href="#nav-home">Knowledge Base</a><button id="navToggle" class="nav-toggle" type="button" aria-expanded="false" aria-controls="navLinks" data-core-bridge="navigation-menus-responsive-menu"><span aria-hidden="true">☰</span><span>Menu</span></button><div id="navLinks" class="nav-links"><a href="#nav-0" aria-current="page">Knowledge base reminder</a><a href="#nav-1">Knowledge Base Collection</a><a href="#nav-2">Knowledge Base Overview</a><a href="#nav-3">Knowledge Base Plan</a></div></nav><section id="navPreview" class="nav-preview" tabindex="-1"><span class="eyebrow">RESPONSIVE MENU</span><h2>Knowledge base reminder</h2><p>On narrow screens, the menu can be expanded; on wide screens, it can also be collapsed proactively to free up reading space.</p></section></div><!-- 11DZ_CORE_END --></section><footer class="session-log"><strong id="workflowSessionScore">0 interaction checkpoints</strong><ol id="workflowSessionLaps" aria-label="Round Log"></ol></footer></div><p id="status" class="status" role="status" aria-live="polite"></p></section><figcaption class="gallery-caption"><strong>Knowledge Base / GALLERY 03</strong></figcaption></figure>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:navigation-menus-responsive-menu */
const navToggle=document.querySelector('#navToggle');const navLinks=document.querySelector('#navLinks');const navPreview=document.querySelector('#navPreview');const navCompact=matchMedia('(max-width:660px)');let navTouched=false;function setNavOpen(open,announceChange=false){navToggle.setAttribute('aria-expanded',String(open));navLinks.classList.toggle('is-open',open);navToggle.querySelector('span:last-child').textContent=open?'Collapse':'Menu';if(announceChange)announce(open?'Main menu expanded':'Main menu collapsed');}function syncNavViewport(){if(!navTouched)setNavOpen(!navCompact.matches);}navToggle.addEventListener('click',()=>{navTouched=true;setNavOpen(navToggle.getAttribute('aria-expanded')!=='true',true);});navCompact.addEventListener?.('change',()=>{navTouched=false;syncNavViewport();});navLinks.querySelectorAll('a').forEach(link=>link.addEventListener('click',event=>{event.preventDefault();navLinks.querySelectorAll('a').forEach(item=>item.removeAttribute('aria-current'));link.setAttribute('aria-current','page');navPreview.querySelector('h2').textContent=link.textContent;navPreview.focus();setNavOpen(false);announce('Entered '+link.textContent);}));document.querySelector('.nav-brand').addEventListener('click',event=>event.preventDefault());syncNavViewport();
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"navigation-menus-responsive-menu","selector":"[data-core-bridge=\"navigation-menus-responsive-menu\"]","mode":"click","key":"Enter"};const workflowBridgeCore=document.querySelector('#workflowCore');const workflowBridgeControl=workflowBridgeCore.querySelector(workflowBridgeSpec.selector);if(!workflowBridgeControl)throw new Error('Missing core bridge: '+workflowBridgeSpec.name);const workflowBridgeControlledId=workflowBridgeControl.getAttribute('aria-controls');const workflowBridgeControlled=workflowBridgeControlledId?document.getElementById(workflowBridgeControlledId):null;workflowBridgeCore.dataset.workflowBridge=workflowBridgeSpec.name;workflowBridgeCore.dataset.workflowVersion='0';function workflowBridgeSerialize(){const visualNode=workflowBridgeCore.firstElementChild||workflowBridgeCore;const visual=getComputedStyle(visualNode);const outputs=[...workflowBridgeCore.querySelectorAll('output,[role="status"],[aria-live],meter,progress')].map(node=>node.textContent.trim()+'|'+node.getAttribute('aria-valuenow')+'|'+node.getAttribute('value'));const canvas=[...workflowBridgeCore.querySelectorAll('canvas')].map(node=>{try{return node.toDataURL().slice(-160);}catch{return 'canvas-unavailable';}});return JSON.stringify({html:workflowBridgeCore.innerHTML,status:statusOutput.textContent,outputs,canvas,visual:[visual.display,visual.visibility,visual.opacity,visual.transform,visual.filter,visual.backgroundColor,visual.width,visual.height],scroll:workflowBridgeSpec.mode==='scroll'?workflowBridgeControl.scrollTop:null});}let workflowBridgeLastEffect=workflowBridgeSerialize();function workflowBridgeSummary(){const label=(workflowBridgeControl.getAttribute('aria-label')||workflowBridgeControl.textContent||workflowBridgeControl.value||workflowBridgeSpec.name).trim().replace(/\s+/g,' ').slice(0,72);return label+' · Core Version '+workflowBridgeCore.dataset.workflowVersion;}function workflowBridgeCommit(){const effect=workflowBridgeSerialize();if(effect===workflowBridgeLastEffect)return {changed:false,summary:workflowBridgeSummary()};workflowBridgeLastEffect=effect;workflowBridgeCore.dataset.workflowVersion=String(Number(workflowBridgeCore.dataset.workflowVersion||0)+1);return {changed:true,summary:workflowBridgeSummary()};}function workflowBridgeScheduleCommit(){queueMicrotask(workflowBridgeCommit);setTimeout(workflowBridgeCommit,0);}workflowBridgeControl.addEventListener("click",workflowBridgeScheduleCommit);const workflowBridgeStateTargets=new Set(workflowBridgeCore.querySelectorAll('dialog'));if(workflowBridgeControlled&&workflowBridgeCore.contains(workflowBridgeControlled))workflowBridgeStateTargets.add(workflowBridgeControlled);workflowBridgeStateTargets.forEach(target=>['close','cancel','toggle'].forEach(eventName=>target.addEventListener(eventName,workflowBridgeScheduleCommit)));function workflowBridgeActivate(){workflowBridgeControl.focus();workflowBridgeControl.click();const result=workflowBridgeCommit();setTimeout(workflowBridgeCommit,0);return result;}function workflowBridgeReset(){workflowBridgeCore.dataset.workflowVersion='0';workflowBridgeLastEffect=workflowBridgeSerialize();}
const workflowSessionCore=document.querySelector('#workflowCore');const workflowSessionToggle=document.querySelector('#workflowSessionToggle');const workflowSessionLength=document.querySelector('#workflowSessionLength');const workflowSessionState={phase:'ready',elapsed:0,limit:Number(workflowSessionLength.value),checkpoints:[],timer:null};function workflowSessionFormat(seconds){return String(Math.floor(seconds/60)).padStart(2,'0')+':'+String(seconds%60).padStart(2,'0');}function workflowSessionDrive(){const percent=Math.min(100,Math.round(workflowSessionState.elapsed/workflowSessionState.limit*100));document.querySelector('#workflowSessionClock').textContent=workflowSessionFormat(Math.max(0,workflowSessionState.limit-workflowSessionState.elapsed));const progress=document.querySelector('#workflowSessionProgress');progress.setAttribute('aria-valuenow',String(percent));progress.querySelector('i').style.width=percent+'%';workflowSessionCore.dataset.sessionPhase=workflowSessionState.phase;document.querySelector('#workflowSessionScore').textContent=workflowSessionState.checkpoints.length+' interactive checkpoints';}function workflowSessionLap(label){workflowSessionState.checkpoints.push({label,at:workflowSessionState.elapsed});const item=document.createElement('li');item.textContent=label+' · '+workflowSessionFormat(workflowSessionState.elapsed);document.querySelector('#workflowSessionLaps').append(item);workflowSessionDrive();}function workflowSessionStop(complete=false){clearInterval(workflowSessionState.timer);workflowSessionState.timer=null;workflowSessionState.phase=complete?'complete':'paused';workflowSessionToggle.textContent=complete?'Restart':'Continue round';workflowSessionToggle.setAttribute('aria-pressed','false');workflowSessionDrive();announce(complete?'Knowledge path round complete':'Round paused');}function workflowSessionStart(){if(workflowSessionState.phase==='complete'){workflowSessionState.elapsed=0;workflowSessionState.checkpoints=[];document.querySelector('#workflowSessionLaps').replaceChildren();}workflowSessionState.phase='running';workflowSessionToggle.textContent='Pause round';workflowSessionToggle.setAttribute('aria-pressed','true');const bridge=workflowBridgeActivate();workflowSessionLap(bridge.summary);clearInterval(workflowSessionState.timer);workflowSessionState.timer=setInterval(()=>{workflowSessionState.elapsed+=1;if(workflowSessionState.elapsed>=workflowSessionState.limit){workflowSessionStop(true);return;}workflowSessionDrive();},1000);workflowSessionDrive();announce('Knowledge Path Round Started · '+bridge.summary);}workflowSessionToggle.addEventListener('click',()=>workflowSessionState.phase==='running'?workflowSessionStop():workflowSessionStart());workflowSessionLength.addEventListener('input',()=>{workflowSessionState.limit=Number(workflowSessionLength.value);workflowSessionState.elapsed=Math.min(workflowSessionState.elapsed,workflowSessionState.limit);workflowSessionDrive();});workflowSessionCore.addEventListener('keydown',event=>{if(event.key==='Enter'||event.key===' '){workflowSessionLap('Keyboard Interaction');}});workflowSessionCore.addEventListener('click',event=>{if(event.target.closest('[data-core-bridge]'))workflowSessionLap('Core action · '+workflowBridgeSummary());});document.addEventListener('visibilitychange',()=>{if(document.hidden&&workflowSessionState.phase==='running')workflowSessionStop();});workflowSessionDrive();
workflowBridgeReset();
</script>
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