#min-width

Defines the minimum width of the element.

默认属性 min-width: 0;

The element has no minimum width.

min-width: 300px;

You can use numeric values like pixels, (r)em, percentages...

If the minimum width is larger than the element's actual width, the min width will be applied.

min-width: 5px;

If the minimum width is smaller than the element's actual width, the min width has no effect.