You first have to determine the selector for the home page. The way I do that is to view the page source and search for "body class". You will find something like
HTML Code:
<body class="home blog logged-in"> OR <body class="page page-id-8 logged-in">
So you would use a selector of
HTML Code:
body.home OR body.page-id-8
and add the selector for the title (I use Firebug with Firefox to determine that) and your full CSS to hide the title would be
HTML Code:
body.home .post-headline {
display: none;
}
OR
HTML Code:
body.page-id-8 .post-headline {
display: none;
}
All you would do to hide the title is put the CSS in ATO>Add HTML/CSS Inserts>CSS Inserts. You of course may have a different page id.