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Which browsers have issues with Flexbox's gap property, and how can I work around them?

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Which browsers have issues with Flexbox's gap property, and how can I work around them?

Asked on Oct 10, 2025

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The Flexbox "gap" property is widely supported in modern browsers, but there are known issues with older versions of some browsers, particularly Internet Explorer and early versions of Edge. A common workaround is to use margins to simulate the gap effect.

<!-- BEGIN COPY / PASTE -->
    <style>
      .flex-container {
        display: flex;
        /* Fallback for browsers not supporting gap */
        margin: -10px;
      }
      .flex-item {
        /* Fallback for browsers not supporting gap */
        margin: 10px;
      }
      @supports (gap: 10px) {
        .flex-container {
          margin: 0; /* Remove fallback margin */
          gap: 10px; /* Use gap if supported */
        }
        .flex-item {
          margin: 0; /* Remove fallback margin */
        }
      }
    </style>
    <div class="flex-container">
      <div class="flex-item">Item 1</div>
      <div class="flex-item">Item 2</div>
      <div class="flex-item">Item 3</div>
    </div>
    <!-- END COPY / PASTE -->

Additional Comment:

Internet Explorer does not support the "gap" property for Flexbox.
Early versions of Edge (before Chromium-based Edge) also lack support.
The workaround uses negative margins on the container and positive margins on items to simulate gaps.
The "@supports" rule checks if the browser supports "gap" and applies it if available.

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Which browsers have issues with Flexbox's gap property, and how can I work around them?

Asked on Oct 10, 2025

Answer

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