Remove Extra Space between Blog Posts

I removed post titles and dates using the following code:

.entry-title {

   display: none;
}

.site-info{display: none;}

body {
font-size: 1.02rem;
}

.entry-date {
display: none;
}

However, now there is extra space between posts, which might be because the PHP code is still reserving space for the post title and date, even though the CSS code is forcing it not to show?

Any advice on how to permanently remove the post title and date from the PHP code?