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Simple Tree View in Pure HTML and CSS
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| <head> | |
| <title>Title</title> | |
| </head> | |
| <body> | |
| <div class="topic-tree"> | |
| <ul class="main-menu"> | |
| <li>Test</li> | |
| <li> | |
| Test | |
| <input type="checkbox" class="toggle"> | |
| <div class="toggle-label"> | |
| <div class="bar"></div> | |
| </div> | |
| <ul class="submenu"> | |
| <li>Test 2</li> | |
| <li> | |
| Test 2 | |
| <input type="checkbox" class="toggle"> | |
| <div class="toggle-label"> | |
| <div class="bar"></div> | |
| </div> | |
| <ul class="submenu-2"> | |
| <li>Test 3</li> | |
| <li>Test 3</li> | |
| <li>Test 3</li> | |
| <li>Test 3</li> | |
| </ul> | |
| </li> | |
| <li>Test 2</li> | |
| </ul> | |
| </li> | |
| <li>Test</li> | |
| <li>Test</li> | |
| </ul> | |
| </div> | |
| </body> |
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| * { | |
| margin: 0; | |
| padding: 0; | |
| } | |
| html { | |
| scroll-behavior:smooth; | |
| } | |
| body { | |
| font-family:Arial; | |
| font-size:2vw; | |
| } | |
| ul { | |
| list-style:none; | |
| } | |
| .topic-tree { | |
| display:flex; | |
| width:100%; | |
| height:100vh; | |
| align-items:center; | |
| justify-content:center; | |
| background:#eee; | |
| color:#333; | |
| } | |
| .main-menu { | |
| display:flex; | |
| flex-direction:column; | |
| gap:2em; | |
| } | |
| .submenu { | |
| padding-left:2em; | |
| display:none; | |
| gap:0.5em; | |
| flex-direction:column; | |
| } | |
| .submenu-2 { | |
| padding-left:2em; | |
| display:none; | |
| gap:0.5em; | |
| flex-direction:column; | |
| } | |
| .toggle { | |
| opacity:0; | |
| z-index:3; | |
| position:absolute; | |
| display:inline; | |
| margin-left:0.5em; | |
| width:0.75em; | |
| height:0.75em; | |
| } | |
| .toggle:checked ~ ul { | |
| display:flex; | |
| } | |
| .toggle:checked + .toggle-label .bar::before { | |
| transform:rotate(0deg); | |
| transition:transform 0.25s ease-in-out; | |
| } | |
| .bar::before, | |
| .bar { | |
| position:relative; | |
| width:0.75em; | |
| height:2px; | |
| background:#000; | |
| display:inline-block; | |
| } | |
| .bar::before { | |
| content:''; | |
| position:absolute; | |
| transform:rotate(90deg); | |
| transition:transform 0.25s ease-in-out; | |
| } | |
| .toggle-label { | |
| position:absolute; | |
| display:inline; | |
| margin-top:-0.3em; | |
| margin-left:0.5em; | |
| } |
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