<div class="justify-content-center">
<p class="hidden-md-down"> TEXT </p>
</div>
BootStrap used to be able to 'hide' a element on resizing using '.hidden'.
It looks like this no longer works.
What is the 4.0+ equivalent?
Bootstrap 4 has the .d-none class. (official documentation)
To hide an element on screens smaller than 960px you could use the class's d-none
& d-lg-block
<div class="d-none d-lg-block">hide on screens smaller than lg</div>