They solve different problems, and good developers use both.
Direct answer
Use Flexbox when you are arranging items along a single line, such as a navigation bar or a row of buttons. Use Grid when you need rows and columns together, such as a page layout or a gallery. They work well combined.
Comparison
| Flexbox | Grid | |
|---|---|---|
| Dimension | one (row or column) | two (rows and columns) |
| Starts from | content | layout |
| Good for | nav bars, toolbars, centring | page layouts, galleries |
Flexbox example
.nav {
display: flex;
justify-content: space-between;
align-items: center;
gap: 16px;
}
Grid example
.gallery {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
gap: 16px;
}
A quick test
If you think in "a row of things", try Flexbox. If you think in "a table of things", try Grid.
Where Teyro fits
Teyro's Responsive Web Design with CSS course turns this into short lessons you can play in a few minutes a day. It has 100 lessons, and you can start free.
The bottom line
Learn both and combine them.
