Why does my CSS grid layout look different in Firefox compared to Chrome?

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Why does my CSS grid layout look different in Firefox compared to Chrome?

Asked on Jan 06, 2026

Answer

Differences in CSS grid layout rendering between browsers like Firefox and Chrome can often be attributed to variations in how each browser interprets CSS specifications or default styles. Here's a simple example to ensure consistent grid behavior across browsers.

<!-- BEGIN COPY / PASTE -->
    <div class="grid-container">
      <div class="grid-item">1</div>
      <div class="grid-item">2</div>
      <div class="grid-item">3</div>
    </div>

    <style>
      .grid-container {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
      }
      .grid-item {
        background-color: lightblue;
        padding: 20px;
        text-align: center;
      }
    </style>
    <!-- END COPY / PASTE -->

Additional Comment:

Ensure you are using the latest version of each browser, as CSS support can vary between versions.
Check for any browser-specific CSS prefixes or default styles that might affect layout.
Use a CSS reset or normalize stylesheet to minimize differences in default styling across browsers.
Inspect the layout in each browser's developer tools to identify any discrepancies in computed styles.

✅ Answered with CSS best practices.

Ask any question about CSS here... and get an instant response.

Why does my CSS grid layout look different in Firefox compared to Chrome?

Asked on Jan 06, 2026

Answer

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