runtime/fixtures/html/css-position-static-test.html at d7f673ac4bb1adaf64885e6742c0ce45b219c4df · jsar-project/runtime · GitHub

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<!DOCTYPE html>
<html>

<head>
  <title>CSS Position Static Test - Inset Properties Ignored</title>
  <style>
    :root {
      --container-width: 500px;
      --test-color: #2196F3;
      --test-color-secondary: #4CAF50;
      --warning-color: #FF9800;
    }

    body {
      background-color: #fff;
      margin: 0;
      padding: 20px;
      font-family: Arial, sans-serif;
      width: 100%;
      line-height: 1.6;
    }

    h1 {
      color: #333;
      border-bottom: 2px solid var(--test-color);
      padding-bottom: 10px;
    }

    h3 {
      font-size: 24px;
      margin-top: 30px;
      color: #555;
    }

    .description {
      margin: 20px 0;
      padding: 15px;
      background-color: #f8f9fa;
      border-left: 4px solid var(--test-color);
      border-radius: 4px;
    }

    .test-container {
      position: relative;
      width: var(--container-width);
      height: 200px;
      background-color: #e3f2fd;
      border: 2px solid var(--test-color);
      margin: 20px 0;
      padding: 10px;
      border-radius: 8px;
    }

    /* Test 1: Static positioned element with inset properties */
    .static-with-inset {
      position: static;
      top: 100px;          /* Should be IGNORED */
      left: 100px;         /* Should be IGNORED */
      right: 50px;         /* Should be IGNORED */
      bottom: 50px;        /* Should be IGNORED */
      width: 200px;
      height: 60px;
      background-color: var(--test-color);
      color: white;
      text-align: center;
      line-height: 60px;
      border-radius: 4px;
      font-weight: bold;
      margin: 10px 0;
    }

    /* Test 2: Relative positioned element with same inset properties for comparison */
    .relative-with-inset {
      position: relative;
      top: 20px;           /* Should be APPLIED */
      left: 50px;          /* Should be APPLIED */
      width: 200px;
      height: 60px;
      background-color: var(--test-color-secondary);
      color: white;
      text-align: center;
      line-height: 60px;
      border-radius: 4px;
      font-weight: bold;
      margin: 10px 0;
    }

    /* Test 3: Static positioned element with large offset values */
    .static-large-offset {
      position: static;
      top: 500px;          /* Large value - should be IGNORED */
      left: 300px;         /* Large value - should be IGNORED */
      width: 250px;
      height: 50px;
      background-color: var(--warning-color);
      color: white;
      text-align: center;
      line-height: 50px;
      border-radius: 4px;
      font-weight: bold;
      margin: 15px 0;
    }

    /* Test 4: Nested static positioning */
    .nested-container {
      position: relative;
      background-color: #fff3e0;
      border: 2px dashed var(--warning-color);
      padding: 20px;
      margin: 10px 0;
      border-radius: 8px;
    }

    .nested-static {
      position: static;
      top: 80px;           /* Should be IGNORED even in nested context */
      left: 120px;         /* Should be IGNORED even in nested context */
      width: 180px;
      height: 45px;
      background-color: #795548;
      color: white;
      text-align: center;
      line-height: 45px;
      border-radius: 4px;
      font-weight: bold;
    }

    .reference-box {
      width: 100px;
      height: 30px;
      background-color: #ccc;
      border: 1px solid #999;
      margin: 5px 0;
      text-align: center;
      line-height: 30px;
      font-size: 12px;
      color: #333;
    }

    .expected-behavior {
      background-color: #e8f5e8;
      border: 1px solid var(--test-color-secondary);
      padding: 10px;
      margin: 15px 0;
      border-radius: 4px;
    }

    .actual-behavior {
      background-color: #fff3e0;
      border: 1px solid var(--warning-color);
      padding: 10px;
      margin: 15px 0;
      border-radius: 4px;
    }

    code {
      background-color: #f5f5f5;
      padding: 2px 6px;
      border-radius: 3px;
      font-family: 'Courier New', monospace;
    }

    .spec-reference {
      background-color: #f0f0f0;
      border: 1px solid #ddd;
      padding: 10px;
      margin: 20px 0;
      border-radius: 4px;
      font-size: 14px;
    }
  </style>
</head>

<body>
  <h1>CSS Position: Static Test - Inset Properties Should Be Ignored</h1>

  <div class="description">
    <strong>Issue:</strong> This test validates the fix for
    <a href="https://github.com/M-CreativeLab/jsar-runtime/issues/378" target="_blank">Issue #378</a>
    - CSS position: static should ignore top/left/right/bottom properties per web standards.
  </div>

  <div class="spec-reference">
    <strong>CSS Specification:</strong> According to the
    <a href="https://www.w3.org/TR/css-position-3/#valdef-position-static" target="_blank">CSS Positioning Module Level 3</a>,
    when an element has <code>position: static</code>, the properties <code>top</code>, <code>left</code>, <code>right</code>,
    and <code>bottom</code> have no effect and should be ignored by the layout engine.
  </div>

  <h3>Test 1: Static Position with Inset Properties</h3>
  <div class="test-container">
    <div class="reference-box">Reference position</div>
    <div class="static-with-inset">
      Static: top:100px left:100px
    </div>
    <div class="expected-behavior">
      <strong>✅ Expected:</strong> The blue box should appear directly below the reference box,
      ignoring the <code>top: 100px; left: 100px;</code> properties.
    </div>
  </div>

  <h3>Test 2: Relative Position with Same Inset Properties (Comparison)</h3>
  <div class="test-container">
    <div class="reference-box">Reference position</div>
    <div class="relative-with-inset">
      Relative: top:20px left:50px
    </div>
    <div class="actual-behavior">
      <strong>📝 Comparison:</strong> The green box should be offset by the specified
      <code>top: 20px; left: 50px;</code> values, demonstrating the difference from static positioning.
    </div>
  </div>

  <h3>Test 3: Static Position with Large Offset Values</h3>
  <div class="test-container">
    <div class="reference-box">Reference position</div>
    <div class="static-large-offset">
      Static: top:500px left:300px
    </div>
    <div class="expected-behavior">
      <strong>✅ Expected:</strong> The orange box should appear in normal document flow,
      completely ignoring the large <code>top: 500px; left: 300px;</code> offset values.
    </div>
  </div>

  <h3>Test 4: Nested Static Positioning</h3>
  <div class="test-container">
    <div class="nested-container">
      <div class="reference-box">Nested reference</div>
      <div class="nested-static">
        Nested Static: top:80px left:120px
      </div>
      <div class="expected-behavior">
        <strong>✅ Expected:</strong> Even within a positioned container, the brown box
        should ignore <code>top: 80px; left: 120px;</code> and appear in normal flow.
      </div>
    </div>
  </div>

  <div class="description">
    <strong>How to verify:</strong>
    <ol>
      <li>All colored boxes with <code>position: static</code> should appear in normal document flow</li>
      <li>None of the static positioned elements should be offset by their top/left/right/bottom values</li>
      <li>Compare with the relative positioned element (Test 2) which should be visibly offset</li>
      <li>This behavior should match standard browsers like Chrome, Firefox, Safari</li>
    </ol>
  </div>

  <div class="description">
    <strong>Implementation Details:</strong> The fix operates at the Rust layout layer where inset properties
    are actively ignored (set to auto) when <code>position: static</code> is detected, ensuring compliance
    with CSS specifications regardless of the computed style values.
  </div>

</body>

</html>