Why Does My Outer Div Collapse When Resizing the Browser Window?-CSS Tutorial-php.cn

Why Does My Outer Div Collapse When Resizing the Browser Window?

Why Doesn't the Outer

Fully Surround the Inner

When Resizing?

In a container with an inner and outer

, the outer

unexpectedly collapses to a width smaller than the inner

's content. This issue can be attributed to the nature of block elements.

Block elements typically take up as much width as their parent container. When the window is resized to a narrower width, the outer

initially expands to accommodate the inner

's content. However, as the window width further reduces, the outer

's width eventually becomes smaller than the inner

's.

To address this issue, a combination of inline-block and min-width: 100% can be used. inline-block allows an element to behave both as an inline and block element. By setting min-width:100%, the outer

will ensure its width is always at least equal to its content's width.

Updated Code

By adding display: inline-block and min-width: 100% to the outer

, the content of the inner

will successfully prevent the outer

from shrinking smaller than its content's width when resizing the window.

.demo {
  display: inline-block;
  min-width: 100%;
}

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