So far, we’ve discussed transform functions separately, but they can also be combined. Want to scale and rotate an object? No problem: use a transform list. For example:
transform: rotate(45deg) scale(2);
Order matters when using transform functions. This is a point that’s better shown than talked about, so let’s look at an example to illustrate. The following CSS skews and rotates an element:
transform: skew(10deg, 15deg) rotate(45deg);
It gives us the result you see below.
What happens if you rotate an element first and then skew it?
transform: rotate(45deg) skew(10deg, 15deg);
The effect is quite different, as seen below.
Each of these transforms has a different current transform matrix created by the order of its transform functions. To fully understand why this is, we’ll need to learn a little bit of matrix multiplication. This will also help us understand the matrix() and matrix3d() functions.
Source: Brown Tiffany B (2021), CSS , SitePoint; 3rd edition.