CSS Flexbox生成器

以可视化方式创建CSS flexbox布局。在调整方向、对齐、换行和间距时实时查看效果。

flex-directionjustify-contentalign-itemsflex-wrap

gap: 8px

display: flex;
flex-direction: row;
justify-content: flex-start;
align-items: stretch;
flex-wrap: nowrap;
gap: 8px;

如何使用本工具

1
Pick values from the four dropdowns: flex-direction, justify-content, align-items, and flex-wrap.
2
Drag the gap slider to set the spacing between items, from 0 to 40 pixels.
3
Watch the live preview of four numbered boxes update instantly to reflect each change.
4
Click 'Copy CSS' to copy the generated declaration block, then paste it onto your own flex container.

Flexbox是CSS中布局元素的现代方式，比浮动（float）或绝对定位简单得多。相关属性包括：flex-direction（行或列）、justify-content（主轴对齐）、align-items（交叉轴对齐）、flex-wrap和gap。本工具将它们全部呈现出来，并提供实时预览。

Aligning a horizontal navigation bar so links sit at flex-start and a logo or button pushes to flex-end with space-between.
Centering a single element both horizontally and vertically using justify-content: center and align-items: center.
Spacing a row of buttons or tags evenly with a fixed gap instead of fragile margins.
Stacking form fields vertically by switching flex-direction to column while keeping consistent gap spacing.
Letting a row of cards wrap onto new lines on narrow screens with flex-wrap: wrap.
Learning how justify-content and align-items behave by toggling values and watching the live preview before committing the code.

该用Flexbox还是Grid？▼

对于一维布局（一排按钮、一个导航栏）使用flexbox。对于二维布局（响应式网格中的卡片）使用CSS Grid。