IE : content area displays behind the tabbs

thanks for quick response.. I did not see position:absolute in my css but in case is there any problem with css , the following is the part of css. Furthermore, I tested my page with Opera and Safari there I can not see part of tabbs.

/**
* front page rigth-sidebar tabbedBlocks.
*/

#block-tabbed_block-1.block, #block-tabbed_block-0.block{
background-color: #FFFFFF;
margin-bottom :30px;
padding:0px;
border:none;
}
body.front.sidebar-right .block-tabbed_block h2{
background-color:#FFFFFF;
padding:0px;
}
body.front.sidebar-right. block-tabbed_block .content{
border:none;
padding:0px;
margin:0px;
}
#block-tabbed_block-1 div.tabs-container{
margin-left:1px;
background:#FF7D00 url(images/hesapli.png) no-repeat 0% 0%;
}
#block-tabbed_block-1 div.tabs-container div.view-footer{
color:white;
}
#block-tabbed_block-0 div.tabs-container{
margin-left:1px;
background:#F9F8FA url(images/gozde.png) no-repeat 15px 10px;
border:1px solid #7D51B2;
}

#block-tabbed_block-1 table.anasayfa-table{
border:none;
}
#block-tabbed_block-1 div.view{
margin-left:100px;
padding-bottom:10px;
padding-bottom:10px;
margin-right:30px;
background-color:#FF7D00;
}

#block-tabbed_block-1 li {
background:transparent url(images/hesapli_tab.png) repeat scroll 0%;
display:block;
float:left;
margin:0pt 0pt 0pt 1px;
padding:0px;
}
#block-tabbed_block-1 li.tabs-selected{
background:transparent url(images/hesapli_tab_sel.png) repeat scroll 0%;
display:block;
float:left;
margin:0pt 0pt 0pt 1px;
padding:0px;
}
#block-tabbed_block-1 li a {
color:#ff7d00;
font-weight:bold;
}
#block-tabbed_block-1 li.tabs-selected a {
color:white;
font-weight:bold;
}

#block-tabbed_block-0 ul.tabs-nav li {
background:transparent url(images/gozde_tab.png) repeat scroll 0%;
display:block;
float:left;
margin:0pt 0pt 0pt 1px;
padding:0px;
}
#block-tabbed_block-0 ul.tabs-nav li.tabs-selected{
background:transparent url(images/gozde_tab_sel.png) repeat scroll 0%;
display:block;
float:left;
margin:0pt 0pt 0pt 1px;
padding:0px;
}
#block-tabbed_block-0 ul.tabs-nav li a {
color:#7D51B2;
font-weight:bold;
}
#block-tabbed_block-0 ul.tabs-nav li.tabs-selected a {
color:white;
font-weight:bold;
}

#block-tabbed_block-0 div.item-list {
margin-left:100px;
margin-top:0px;
margin-right:10px;
margin-bottom:10px;
}
#block-tabbed_block-0 div.item-list h3{
display:none;
}
#block-tabbed_block-0 div.item-list ul{
margin-top:0px;
padding-top:10px;
}

#block-tabbed_block-0 div.item-list ul li {
font-size:10px;
}
#block-tabbed_block-0 div.item-list ul li a,
#block-tabbed_block-0 div.item-list ul li a.visited{
color:#666666;
text-decoration:none;
}
#block-tabbed_block-0 div.item-list ul li a.hover{
color:#666666;
text-decoration:underline;
}
#block-tabbed_block-0 div.item-list ul li a.active{
color:#666666;
text-decoration:none;
}

A custom theme based on Aberdeen ..

Here is what I have got in block.tpl.php

This differs slightly from garland's block.tpl ..

I copied the garland's block.tpl to my theme and retested the site but nothing change..
Any other idea ?

Thanks for prompt reply. Ok, it is css problem . But would you give a hint to correct this problem . Shall I change only the width of tabs ?

ahh.. did not work ...