The official doc is really good to start, this note is for what I use regularly.
Best practices
- [source] Don’t use
@apply
just to make things look “cleaner”. Otherwise you are basically just writing CSS again and throwing away all of the workflow and maintainability advantages Tailwind gives you.
:not
in tailwindExample: don’t apply
:hover
effect on the :disabled
button1[&:not(:disabled)]:hover:tw-bg-gray-500
Color preview doesn’t show in VSCode (preview = a square containing the color before the class)
If you have a custom color in tailwind config file,
1{
2 theme: {
3 extend: {
4 colors: {
5 'custom': 'var(--custom-color)' // not show
6 'hello': '#fff' // show }
7 }
8 }
9}
Tailwind’s preflight break existing styles
In case you want to integrate TW to your current system, it may break the existing style because of its preflight. For example, the buttons may be hidden unexpectedly.
Use both Bootstrap and Tailwind → naming conflicts
To avoid this, use prefix option (eg.
tw-font-semibold
instead of font-semibold
). Read more in this SO.Problems with Tailwind CSS IntelliSense VSCode extension
When you type the first class right after
className="
, this gives you nothing. However, if you type ""
(the second "
will display automatically), the suggestions will appear normally!!important
calc
1// Tailwind
2class="w-[calc(100%+2rem)]"
1// CSS
2.w-\[calc\(100\%\+2rem\)\] {
3 width: calc(100% + 2rem);
4}
@headless-ui
's Listbox
with createPortal
and @floating-ui
There is a problem when using Listbox. That’s when your component is inside an “overflow: hidden” component. The Listbox Panel will be hidden by its parent.
To solve this, we use the idea of createPortal and move the Panel to the root of the document and we use floating-ui (especially, we use only
@floating-ui/react-dom
← it’s smaller size than @floating-ui/react
) to position the panel to be near to the button.1import { Listbox, Transition } from '@headlessui/react'
2import { createPortal } from 'react-dom'
3
4export default .... {
5 const { refs, floatingStyles } = useFloating()
6
7 return (
8 <Listbox ...>
9 <Listbox.Button ref={refs.setReference} ...>
10 {createPortal(
11 <Transition ref={refs.setFloating} ...>
12 <Listbox.Options style={{...otherStyles, ...floatingStyles}}>
13 ...
14 , document.body)}
15 )
16}