應(yīng)選擇Flexbox進(jìn)行一維布局，如導(dǎo)航欄、響應(yīng)式組件和垂直居中；使用CSS Grid處理二維布局。1. Flexbox適用于水平或垂直排列元素，如導(dǎo)航欄中的鏈接對(duì)齊和間距控制；2. 在構(gòu)建響應(yīng)式組件（如按鈕、表單控件）時(shí)，F(xiàn)lexbox提供更直觀的布局調(diào)整；3. Flexbox簡(jiǎn)化了垂直居中問(wèn)題，通過(guò)align-items和justify-content即可實(shí)現(xiàn)。對(duì)于需要同時(shí)管理行和列的復(fù)雜布局，則應(yīng)選擇CSS Grid。

Flexbox and CSS Grid are both powerful layout tools in CSS, but they serve different purposes. You should choose Flexbox when you're dealing with one-dimensional layouts, like aligning items in a row or column. If your goal is to build complex two-dimensional layouts (rows and columns together), then CSS Grid is the better choice.

Here are a few real-world scenarios where Flexbox shines:

For Navigation Bars and Toolbars

Flexbox makes it easy to line up links horizontally and control spacing between them — something very common in navigation bars.

• You can center items vertically or horizontally with just a couple of properties.
• Spacing between items can be evenly managed using gap.
• It’s simple to push one item to the far right or left using margin: auto.

For example:

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

This setup keeps your main links lined up and allows extra elements like a logo or search bar to sit neatly in place.

When Building Responsive Components, Not Entire Pages

If you're working on smaller UI components that need to adapt to different screen sizes — like buttons, form controls, or media objects — Flexbox gives you more predictable behavior across devices.

• Flex items can grow or shrink based on available space using flex-grow, flex-shrink, and flex-basis.
• You can reorder items visually without changing the HTML structure using order.

It's especially useful for things like:

• Cards with uneven content that still need consistent alignment
• Form fields that stack vertically on mobile but line up side-by-side on desktop

Grid could do these too, but Flexbox usually feels more straightforward for small-scale layout adjustments.

If You Need Vertical Centering Without Headaches

One of the classic pain points in CSS was vertical centering — until Flexbox came along.

• Setting display: flex on a container and using align-items and justify-content gives you perfect centering in just two lines.
• This works regardless of the item's size, which used to be tricky with older methods.

So if you’re building modals, tooltips, or even full-screen landing sections where content needs to be centered, Flexbox is a solid go-to.

Choosing between Flexbox and Grid doesn’t have to be confusing. If your layout mostly goes in one direction — left to right or top to bottom — and you care about simplicity and responsiveness at the component level, Flexbox is probably what you want.

基本上就這些。

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