You are correct, but I am not an experienced coder. I must be doing something wrong. I believe the change should be made in the CSS below. Could you show me exactly what to add or change in the CSS below if this is the correct CSS and if not please advise. Thank you!!!

Default Post Template
*/
.td-post-content p:empty {
display: none;
}
.td-post-featured-image {
position: relative;
}
.td-post-featured-image img {
display: block;
margin-bottom: 26px;
width: 100%;
}
.td-post-featured-image .wp-caption-text {
margin-bottom: 26px;
z-index: 1;
}