bootstrap/docs/4.0/utilities/image-replacement.md

layout	title	description	group	toc
docs	Image replacement	Swap text for background images with the image replacement class.	utilities	true

Utilize the .text-hide class or mixin to help replace an element's text content with a background image.

{% highlight html %}

Custom heading

{% endhighlight %}

{% highlight scss %} // Usage as a mixin .heading { @include text-hide; } {% endhighlight %}