photo gallery in post not showing in homepage

I put 3 photos into a blog entry (The Beauty of Greenbelt Mall) using Insert Gallery. The photos appear in the blog entry but in the home page, this appears instead:

.gallery {
margin: auto;
}
.gallery-item {
float: left;
margin-top: 10px;
text-align: center;
width: 33%; }
.gallery img {
border: 2px solid #cfcfcf;
}
.gallery-caption {
margin-left: 0;
}

Here’s a link to my home page:
https://www.leajusi.com/

Would greatly appreciate any help fixing this asap. Thanks.