Vertical align with Tailwind CSS across full screen div

Tailwind Css Problem Overview

How can I vertically align a div with Tailwind? What I want:

-----------------------------------
|                                |
|                                |
|                                |
|             item1              |
|             item2              |
|                                |
|                                |
|                                |
-----------------------------------

What I currently have:

-----------------------------------
|             item1              |
|             item2              |
|                                |
|                                |
|                                |
|                                |
|                                |
|                                |
-----------------------------------

HTML

<div class="flex flex-col h-screen my-auto items-center bgimg bg-cover">
  <h3 class="text-white">heading</h3>
  <button class="mt-2 bg-white text-black font-bold py-1 px-8 rounded m-2">
    call to action
  </button>
</div>

CSS

.bgimg {
    background-image: url('https://d1ia71hq4oe7pn.cloudfront.net/photo/60021841-480px.jpg');
}

I have successfully centered on the secondary axis (left-right) with class items-center. Reading the documentation, I tried align-middle but it does not work. I have confirmed the divs have full height and my-auto.

I'm using this version of Tailwind: https://cdn.jsdelivr.net/npm/tailwindcss/dist/tailwind.min.css

Here is a JSFiddle: https://jsfiddle.net/7xnghf1m/2/

Tailwind Css Solutions

Solution 1 - Tailwind Css

You can also do

<div class="flex h-screen">
  <div class="m-auto">
    <h3>title</h3>
    <button>button</button>
  </div>
</div>

Solution 2 - Tailwind Css

Partly referencing @mythicalcoder 's solution but using only the necessary classes provided by TailwindCss (Version 1.8.+):

flex : To use a flex-div as container
h-screen : To size the container-height to the viewport height.
justify-center : To justify center (horizontal center) - main axis - Doc
items-center : To align the items to center (horizontal center) - cross axis - Doc

My Solution to center two text lines:

<link href="https://unpkg.com/tailwindcss@^1.0/dist/tailwind.min.css" rel="stylesheet"/>

  <div class="flex h-screen justify-center items-center">
    <div class="text-center bg-blue-400"> <!-- ⬅️ THIS DIV WILL BE CENTERED -->
        <h1 class="text-3xl">HEADING</h1>
        <p class="text-xl">Sub text</p>
    </div>
  </div>

Solution 3 - Tailwind Css

Justify-Center and Items-Center

While Anders' answer solves the problem for this particular case, I think it's important to note that using justify-center and items-center is circumstantial.

Let's have a look at one of the examples from the tailwind documentation.

<link href="https://cdn.jsdelivr.net/npm/tailwindcss/dist/tailwind.min.css" rel="stylesheet"/>

<div class="flex justify-center bg-gray-100">
  <div class="text-gray-800 text-center bg-gray-300 px-4 py-2 m-2">1</div>
  <div class="text-gray-800 text-center bg-gray-300 px-4 py-2 m-2">2</div>
  <div class="text-gray-800 text-center bg-gray-300 px-4 py-2 m-2">3</div>
</div>

As we can see the above code centers the elements horizontally. The reason for this is because the justify-center class centers the element on the flex container's main axis.

This means that if we were to change the main axis to 'column' then we would get a different result.

<link href="https://cdn.jsdelivr.net/npm/tailwindcss/dist/tailwind.min.css" rel="stylesheet"/>

<div class="flex flex-col justify-center bg-gray-100">
  <div class="text-gray-800 text-center bg-gray-300 px-4 py-2 m-2">1</div>
  <div class="text-gray-800 text-center bg-gray-300 px-4 py-2 m-2">2</div>
  <div class="text-gray-800 text-center bg-gray-300 px-4 py-2 m-2">3</div>
</div>

Justify-Center and Items-Center centers the elements on the main axis and the cross axis, and they can be used in place of each other. They are the opposites of each other and will produce different results depending on what the current main axis is.

Solution 4 - Tailwind Css

According to the question, the "Items1", "Items2" should be both horizontally and vertically aligned.

Horizontal => text-center/justify-center

Vertical => items-center

Here is a sample code for producing a view similar to the ASCII image in the question.

https://cdn.jsdelivr.net/npm/tailwindcss/dist/tailwind.min.css" rel="stylesheet"/>

<div class="relative h-32 bg-blue-400">
  <div class="absolute inset-0 flex items-center justify-center">
    Item 1
    <br>
    Item 2
  </div> 
</div>

Solution 5 - Tailwind Css

@bastiotutuama's answer is already good, however if there are other surrounding items then use align self utilities instead of items-center. source

<link href="https://cdn.jsdelivr.net/npm/tailwindcss/dist/tailwind.min.css" rel="stylesheet"/>

<div class="bg-blue-500 flex justify-center h-screen">
    <div class="bg-red-300 self-start">
        <h1>
            Let us get you off the board <br>
            <span>Pursue what you wanted</span>
        </h1>
        <div class="mt-2 flex items-center">
            <a href="#" class="block bg-indigo-600 text-indigo-100 px-4 py-2 rounded text-sm uppercase tracking-wide font-semibold">Get started</a>
            <a href="#" class="block bg-gray-300 text-gray-600 px-4 py-2 rounded text-sm uppercase font-semibold">Learn more</a>
        </div>
    </div>
    <div class="bg-yellow-300 self-center">
        <h1>
            Let us get you off the board <br>
            <span>Pursue what you wanted</span>
        </h1>
        <div class="mt-2 flex items-center">
            <a href="#" class="block bg-indigo-600 text-indigo-100 px-4 py-2 rounded text-sm uppercase tracking-wide font-semibold">Get started</a>
            <a href="#" class="block bg-gray-300 text-gray-600 px-4 py-2 rounded text-sm uppercase font-semibold">Learn more</a>
        </div>
    </div>
    <div class="bg-red-300 self-end">
        <h1>
            Let us get you off the board <br>
            <span>Pursue what you wanted</span>
        </h1>
        <div class="mt-2 flex items-center">
            <a href="#" class="block bg-indigo-600 text-indigo-100 px-4 py-2 rounded text-sm uppercase tracking-wide font-semibold">Get started</a>
            <a href="#" class="block bg-gray-300 text-gray-600 px-4 py-2 rounded text-sm uppercase font-semibold">Learn more</a>
        </div>
    </div>
</div>

Solution 6 - Tailwind Css

For vertical center in Tailwind Grid use class name:

> self-center

 <div class="self-center">

Solution 7 - Tailwind Css

Use class justify-center to align on the main axis. align-middle operates on the cross axis.

Solution 8 - Tailwind Css

You have another choice which is grid and can do

<div class="grid justify-items-center items-center h-screen">
  <div>
    <h3>title</h3>
    <button>button</button>
  </div>
</div>

Solution 9 - Tailwind Css

I did it this way and it works.

<div class="grid grid-cols-3 h-screen">
<div class="bg-red-400 col-span-3 sm:col-span-1 flex">
    <div class="bg-blue-300 m-auto">
        <h1>hello</h1>
    </div>
</div>
<div class="col-span-3 bg-red-50 sm:col-span-2"></div>

See image

Content Type	Original Author	Original Content on Stackoverflow
Question	ajthinking	View Question on Stackoverflow
Solution 1 - Tailwind Css	Nartub	View Answer on Stackoverflow
Solution 2 - Tailwind Css	bastiotutuama	View Answer on Stackoverflow
Solution 3 - Tailwind Css	Linus Juhlin	View Answer on Stackoverflow
Solution 4 - Tailwind Css	mythicalcoder	View Answer on Stackoverflow
Solution 5 - Tailwind Css	Rizky92	View Answer on Stackoverflow
Solution 6 - Tailwind Css	djsreeraj	View Answer on Stackoverflow
Solution 7 - Tailwind Css	ajthinking	View Answer on Stackoverflow
Solution 8 - Tailwind Css	panjeh	View Answer on Stackoverflow
Solution 9 - Tailwind Css	Ameer Hamza	View Answer on Stackoverflow