CSS Grid vs. Flexbox: Which is Best for Creating Responsive Squares?

Creating a Responsive Grid Layout with Dynamic Squares

You aim to construct a grid layout with responsive squares, ensuring each square has a height equal to its width and separated by a gutter. To achieve this, you're considering the use of either CSS Grid or Flexbox.

CSS Grid

Using CSS Grid, you can define the grid's columns and the height of the squares as a percentage of the grid area. Here's an example:

.square-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30%, 1fr));
    gap: 10px;
}

.square {
    height: 100%;
}

Flexbox

With Flexbox, you can create a responsive layout using the flex-wrap property. To ensure the squares maintain a square aspect ratio, you can use the padding-bottom trick or create a pseudo-element to set the appropriate height.

.square-container {
    display: flex;
    flex-wrap: wrap;
}

.square {
    flex-basis: calc(33.333% - 10px);
    margin: 5px;
    border: 1px solid;
    box-sizing: border-box;
}

.square::before {
    content: '';
    display: block;
    padding-top: 100%;
}

Additional Considerations

• To center text within the squares, you can use the display: flex; property with justify-content: center; and align-items: center;.
• The padding-bottom trick may give unreliable results in older browsers.
• To ensure consistent square aspect ratios, position the content element absolutely within the squares.

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