How Can I Avoid Double Borders in CSS Grid Layout?

Preventing Double Borders in CSS Grid

In CSS Grid, borders around grid items can sometimes result in double borders appearing when cells are adjacent. To eliminate these double borders, a different approach can be employed.

Instead of using actual borders on grid items, consider using the background-color property on the grid container to create the "border color" effect. Additionally, the grid-gap property can be used to specify the "border width."

Here's an example demonstrating this technique:

.wrapper {
  display: inline-grid;
  grid-template-columns: 50px 50px 50px 50px;
  border: 1px solid black;
  grid-gap: 1px;
  background-color: black;
}

.wrapper > div {
  background-color: white;
  padding: 15px;
  text-align: center;
}

<div class="wrapper">
  <div>1</div>
  <div>2</div>
  <div>3</div>
  <div>4</div>
  <div>5</div>
  <div>6</div>
  <div>7</div>
  <div>8</div>
</div>

By applying this method, the grid cells will appear to have borders, without actually having any borders defined on the grid items themselves. This eliminates the issue of double borders.

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