When you highlight the hidden text and use "View Selection Source" in FireFox, you will see the following source:
<div class="sub_i_title">
<a href="/questions/" style="float: right; margin-right: 10px;">更多»»</a>
<h2 style="line-height: 1em; display: block;">最新的问题</h2>
</div>
Is it possible that there are formatting issues with your source code? The problematic line seems to be:
"<h2>最新的问题</h2> "
If you look at the page as a whole, you'll notice consistent white space under each H2 tag, which may be obscuring the first link in each list.
In fact, if you save the page and inspect it using an editor that shows ASCII/HEX values for each character, you'll discover that the troublesome whitespace characters are actually A0
in HEX, whereas a regular space is 20
. Could it be that you have inadvertently inserted a faulty whitespace character due to having an IME activated?