I'm a beginner in this field! I have experimented with various names and details multiple times, however, it does not seem to be moving to the desired position.
HTML
<div id="about-footer"class="about-footer">
</div>
CSS
.about-footer {
position: absolute;
top: 600px;
width: 100%;
height: 300px;
background-color: dimgrey;
}