Using first-of-type to Style the First Row of the List

We can use first-of-type modifier to style the first row of the List.

Version

TailwindCSS 3.0

first-of-type

first000

The background color of the first row of the list is gray.

<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script src="https://unpkg.com/alpinejs" defer></script>
  <script src="https://cdn.tailwindcss.com"></script>
  <title>TailwindCSS</title>
</head>
<body>
  <ul x-data="{ colors: ['Red', 'Green', 'Blue']}">
    <template x-for="x in colors">
      <li class="first-of-type:bg-gray-300" x-text="x" />
    </template>
  </ul>
</body>

Line 11

<ul x-data="{ colors: ['Red', 'Green', 'Blue']}">
  <template x-for="x in colors">
    <li class="first-of-type:bg-gray-300" x-text="x" />
  </template>
</ul>

first-of-type : apply utility on the first child element of the same element type of <ul>

Conclusion

first doesn’t work on Alpine. Since we have to use <template> with x-for, the first child element of <ul> is <template>, not <li>
To make Alpine work, we have to use first-of-type instead of first

Reference

TailwindCSS, first-of-type