body {
font: 100% verdana, arial, sans-serif;
background-color: #fff;
margin: 50px;
}

/* begin css tabs */

ul#tabnav { /* general settings */
text-align: left; /* set to left, right or center */
margin: 1em 0 1em 0; /* set margins as desired */
font: bold 11px verdana, arial, sans-serif; /* set font as desired */
border-bottom: 1px solid #6c6; /* set border COLOR as desired */
list-style-type: none;
padding: 3px 10px 3px 10px; /* THIRD number must change with respect to padding-top (X) below */
}

ul#tabnav li { /* do not change */
display: inline;
}

body#tab1 li.tab1, body#tab2 li.tab2, body#tab3 li.tab3, body#tab4 li.tab4 { /* settings for selected tab */
border-bottom: 1px solid #fff; /* set border color to page background color */
background-color: #fff; /* set background color to match above border color */
}

body#tab1 li.tab1 a, body#tab2 li.tab2 a, body#tab3 li.tab3 a, body#tab4 li.tab4 a { /* settings for selected tab link */
background-color: #fff; /* set selected tab background color as desired */
color: #000; /* set selected tab link color as desired */
position: relative;
top: 1px;
padding-top: 4px; /* must change with respect to padding (X) above and below */
}

ul#tabnav li a { /* settings for all tab links */
padding: 3px 4px; /* set padding (tab size) as desired; FIRST number must change with respect to padding-top (X) above */
border: 1px solid #6c6; /* set border COLOR as desired; usually matches border color specified in #tabnav */
background-color: #cfc; /* set unselected tab background color as desired */
color: #666; /* set unselected tab link color as desired */
margin-right: 0px; /* set additional spacing between tabs as desired */
text-decoration: none;
border-bottom: none;
}

ul#tabnav a:hover { /* settings for hover effect */
background: #fff; /* set desired hover color */
}

/* end css tabs */

=============================================
<ul id="tabnav">
  <li class="tab1"><a href="#">الرئيسية</a></li>
  <li class="tab2"><a href="#">تعديل</a></li>
  <li class="tab3"><a href="#">تعديل</a></li>
  <li class="tab4"><a href="#">تعديل</a></li>
  <li class="tab5"><a href="#">تعديل</a></li>
  <li class="tab6"><a href="#">تعديل</a></li>
  <li class="tab7"><a href="#">تعديل</a></li>
  <li class="tab8"><a href="#">تعديل</a></li>
  <li class="tab9"><a href="#">تعديل</a></li>
  <li class="tab10"><a href="#">تعديل</a></li>
  <li class="tab11"><a href="#">تعديل</a></li>
  <li class="tab12"><a href="#">تعديل</a></li>
  <li class="tab13"><a href="#">تعديل</a></li>
  <li class="tab14"><a href="#">تعديل</a></li>
  <li class="tab15"><a href="#">تعديل</a></li>
  <li class="tab16"><a href="#">تعديل</a></li>
  <li class="tab17"><a href="#">تعديل</a></li>
  <li class="tab18"><a href="#">تعديل</a></li>
  <li class="tab19"><a href="#">تعديل</a></li>
  <li class="tab20"><a href="#">تعديل</a></li>
  <li class="tab21"><a href="#">تعديل</a></li>
  <li class="tab22"><a href="#">تعديل</a></li>
  <li class="tab23"><a href="#">تعديل</a></li>
</ul>