Making a post slider in Eleventy with Tailwind

Yesterday we finished the blog newsletter layout using Tailwind grid. Today we will be focussing on making the slider part.

This will essentially be a list with blog articles in it. You can then horizontally scroll through this list.

We won't be adding the next/previous button at this stage. Perhaps we will do that in the finishing touch session.

The end result will look similar to the design:

Note: We won't be doing the visible section at the end since we are working with offset grids.

Defining the structure

As mentioned, it should function as a list since that will be the correct markup to use in this case.

Let's change our blog template to use a new post-slider instead of the post-list.

Create the post-slider.njk file inside the src/_includes/partials/components folder.

Then link this file in the blog.njk file:

<div class="container m-auto">
  {% include "partials/components/post-slider.njk" %}
</div>

Then we can modify this post-slider.njk and define our necessary checks if the data exists.

{% if postListItems.length %}
<ul>
  {% for item in postListItems %}
  <li>
    <!-- ITEM HERE -->
  </li>
  {% endfor %}
</ul>
{% endif %}

This is still much like the post-list we had before, so let's make some changes to render the articles correctly.

We will first focus on styling the list items.

<li class="mr-6 w-72 h-96">
  <a
    href="{{ item.url }}"
    title="{{ item.data.title }}"
    class="relative flex justify-center w-full h-full align-center"
  >
    <img src="https://via.placeholder.com/800x600" class="object-cover w-full h-full" />
  </a>
</li>

This will create the rectangle list item where the whole element is clickable. Inside of that, we have the image.

This looks like this:

That looks like the right size. Let's add the inner content, which consists of:

• The category
• The title with an underline
• A button with an arrow on the right

<li class="mr-6 w-72 h-96">
  <a
    href="{{ item.url }}"
    title="{{ item.data.title }}"
    class="relative flex justify-center w-full h-full align-center"
  >
    <img src="https://via.placeholder.com/800x600" class="object-cover w-full h-full" />
    <div
      class="absolute flex flex-col justify-center w-1/2 transform -translate-x-1/2 -translate-y-1/2 top-1/2 left-1/2 h-1/2"
    >
      <p class="mb-2 text-purple">To do</p>
      <h3 class="w-full mb-4 text-3xl font-bold border-b-2 text-purple border-purple">
        This is {{ item.data.title }}
      </h3>
      <button class="flex justify-between text-xs text-purple font-small">
        Read more <i>&#8594;</i>
      </button>
    </div>
  </a>
</li>

Since we want this box to be on top of the image, we make it absolute.
Then we make sure it's 50% of the element's width and height and center it using the left/top and translate offset values.

For the button, we use flexbox to add space between the text and the arrow icon.

The result is now:

Pretty solid effort, only they are still showing under each other. How can we now make them flow horizontally?

<ul class="flex mt-24 mb-24 overflow-x-auto overflow-y-visible"></ul>

We add flex to the <ul> element and add overflow-x-auto and overflow-y-visible, so we can scroll through them.

However, when we now render, we get this result:

Almost there!
But somehow, our cards are being squished inside the ul, so if we add more, the cards get smaller like this:

To fix this, let's add the following classes to our <li> element.

<li class="flex-grow-0 flex-shrink-0 ..."></li>

That looks cool!

You can find today's code on GitHub.

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