where there is a space between the two div?

http://xanlz.com/template/

why there is a space between <div class="nav-top">...&开发者_C百科lt;/div> and <div class="nav-inner clear"> </div>? (the test navigation and the bottom part)

how to alter it. thank you.

the correct style shows as this

Its because the links in your navigation has a fixed height of 23px. Change it to 21px.

Specifically, th erule I'm talking about is

.nav-top ul li.navahead a, .nav-top ul li.navmiddle a

in style.css

I used firebug to debug this in 2 minutes. You should use it too!

Change the height of your tags from 23px to 21px.

.nav-top ul li.navahead a, .nav-top ul li.navmiddle a {
    color: #094884;
    display: block;
    font-size: 14px;
    font-weight: bold;
    height: 21px;
    padding-top: 9px;
    width: 98px;
}

nav-innerclear is not defined in your CSS. Put its margin-top to 0px.