I figured out how to make the images not repeat. There is a span class in the “home.php” file, it is not located in any css file
<span class=”attach-post-image” style=”height:300px;display:block;background:url(‘<?php the_post_image_url(‘large’); ?>’) center center repeat”> </span>
change “repeat” to “no-repeat” and you’re done! The images will not fill the square unless they are large enough to do so, so your square will no longer be full.
Even if you figured this out already, I wanted to post this for others such as myself, who could not find the clear solution anywhere online.
