What I have created is a layout with two columns, each taking up 50% of the desktop screen. When viewing on mobile, typically we would make the columns 100% to fit the smaller screen. However, in my case, I want the right column to be hidden on mobile and only appear when triggered by a link in the left column. Can someone please help me achieve this as I am currently unsure how to proceed.
<div class="container">
<div class="col left">
<p><a href="#">Expand Right Column on mobile only</a></p>
</div>
<div class="col right">
<p>Content to be displayed on desktop but only expanded on mobile when triggered from the link above</p>
</div>