Please go to My Site → Customize → CSS (or Additional CSS), then add all of the following code to the bottom of that window.
.page .big-text {
display: none;
}
/* Hide authour info PA-9348444-hc*/
.single .byline {
display: none;
}
/* This CSS hides the post content on the homepage featured content slider.
* 10726306-hc (jw)
*/
.home .featured-slider .entry-content {
display: none;
}
/* This CSS hides featured images on single posts.
* 10919075-hc (jw)
*/
.single-post .featured-image {
display: none;
}
Tip: keep the /*
comment */
in the code to later know what this code does.