The concept of dynamically changing the content of a webpage without refreshing it is commonly referred to as a "single page application," a popular trend with numerous advantages and some challenges. Typically, this is achieved using JavaScript along with libraries or frameworks due to the nature of web development.
Interestingly, it is also possible to create basic single-page application functionality using only HTML and CSS. This involves displaying the entire website content but showing only specific sections at a time. The key here is to utilize the `:target` selector, which points to the element targeted by the most recent link clicked. (Note that `:active` behaves differently, indicating an activated link before it's visited.)
Here's a simple example:
<!doctype html>
<meta charset=utf-8>
<style>
.section { display: none }
.section:target { display: block }
</style>
<div class="nav-bar">
<ul class="nav">
<li><a href=#About>About</a></li>
<li><a href=#Contact>Contact</a></li>
<li><a href=#Other>Other</a></li>
</ul>
</div>
<div id=About class=section>
About us
</div>
<div id=Contact class=section>
Contact us
</div>
<div id=Other class=section>
Other stuff
</div>
It's important to note that this approach may not be compatible with older browsers like IE 8, as they lack support for the `:target` selector.