As I delve into working with bootstrap 4, I am experimenting with creating various basic layouts. In line with the guidelines provided in bootstrap 4 documentation, I aimed to vertically align block elements by applying the class align-items-center.
Despite attempting a simple example on codepen, I encountered an issue where the divs did not appear centered vertically.
I am seeking guidance on what might be causing this misalignment. Any insights?
To easily center elements vertically, you can set the height and width of both html and body to 100%. This will make the element take on the height of its parent.
Afterward, adjust the child elements accordingly. In bootstrap, use w-100 for width: 100% and h-100 for height: 100%. Additionally, in a 12 column layout like bootstrap's, switch your class from col-md-4 to col-md-6
Keep in mind that you can also apply w-100 and h-100 directly to the html and body tags for the same result.
<style>
html,body{
width:100%;
margin:0;
height:100%;
}
</style>
<div class="container w-100 h-100">
<div class="row align-items-center h-100">
<div class="col-md-6">
<h1 class="alert alert-primary">Vertical</h1>
</div>
<div class="col-md-6">
<h1 class="alert alert-success">Vertical</h1>
</div>
</div>
</div>
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