Tailwind CSS parallax effect
Tags: css
Published: 2020-12-18 05:06:51

Today we'll be creating a super cool parallax effect using only tailwind classes.

The only CSS we need is the use of a background-image. The rest will be build using Tailwind classes.

I've made a full [CSS parallax effect](https://daily-dev-tips.com/posts/css-only-parallax-scrolling/) before I've you are interested in seeing how it works.

The main idea is that an image stays at one position while you scroll over it.

In this Tailwind example, we will be using it for the header and an inline section.

You can see the end result in the following GIF.

![Tailwind CSS parallax effect](https://cdn.hashnode.com/res/hashnode/image/upload/v1607859453992/D9BXgFgGZ.gif)

## Tailwind CSS parallax header

We'll start by creating the header using Tailwind classes.

Let's define our `HTML` structure first.

```html
<header>
  <div>
    Welcome to my site!
  </div>
</header>
```

We'll be using the header tag with a div inside. The div will hold some text just to show the parallax effect better.

Now we want to make this header full height with a background that will cover the area. The image must also be centered.

I'll post the full class list and guide you through each class and what it's used for.

```html
<header
  class="flex items-center justify-center h-screen mb-12 bg-fixed bg-center bg-cover custom-img"
>
  <div class="p-5 text-2xl text-white bg-purple-300 bg-opacity-50 rounded-xl">
    Welcome to my site!
  </div>
</header>
```

The classes used for the header:

- `flex`: Adds a display flex so we can align the text block inside
- `items-center`: Aligns the text-block vertically
- `justify-center`: Aligns the text-block horizontally
- `h-screen`: This adds a 100vh height, so it's 100% of the viewport.
- `mb-12`: We add quite a big margin-bottom with this (3rem)
- `bg-fixed`: This is the magic that makes the parallax effect, the background-fixed makes sure the background stays where it's set.
- `bg-center`: This makes sure the background is centered
- `bg-cover`: Makes sure the background is covering the whole header element
- `custom-img`: Custom class to add our background image.

Then for our overlay box, we use the following:

- `p-5`: Adds equal padding on each side (1.25rem)
- `text-2xl`: Makes the text nice and big (1.5rem)
- `text-white`: Make the text white
- `bg-purple-300`: A nice cool purple color
- `bg-opacity-50`: This one makes sure the background has an opacity of 50%.
- `rounder-xl`: Adds the nice rounder borders

That's it! We now have our parallax header, which is always 100% of the viewport height.

## Tailwind CSS parallax section

That's all cool and well, but now you want a parallax effect between two text areas.

That is almost the same setup, except in this case, we add a `container` class to make it not 100% wide. With this, we also need to add `m-auto`, which will center it horizontally.

```html
<section
  class="container flex items-center justify-center h-screen m-auto mb-12 bg-fixed bg-center bg-cover custom-img"
>
  <div class="p-5 text-2xl text-white bg-purple-300 bg-opacity-50 rounded-xl">
    Parralax inline
  </div>
</section>
```

As you can see all the other classes are the same.
The whole text block also uses the same classes as the header block.

You can find this full demo in this Codepen.

{% codepen https://codepen.io/rebelchris/pen/VwKPzQm %}

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