The homepage ranking totally disappeared since July 1.But the ranking of other pages didn't and have no changes.After site:domain, the domain homepage is in the first page and the pages that have been included r normal.It is also normal when searching in google with the domain.I have increased the keyword density a few days ago. And in order not to undermine the site's appearance, i have used CSS style to hide the code. The codes r as follows:
<div style="COLOR: #ad4e6c; FONT-SIZE: 10px">
</div> I have deleted the hidden codes now.I want to ask how can i deal with this problem? Thanks very much.