.sub li {
    list-style-type: none;
  }
  .tabTitel {
    float:left;
    width:50%;
    background: orange;
    color:white;
  }
  .tabLink {
    float:left;
    width:49%;
    text-align:right;
    background: orange;
  }
  .kolom {
    float:left;
    list-style-type: none;
  }
<!--  div.content {float:left; width:570px;}-->
  div.content_container {width:760px; padding:0; margin:0}
  div.tab {float:left; font-size:12px; font-weight:bold; color:green; width:600px; margin:3px 0 0 0; border-top:1px solid white; padding:2px 0px 3px 7px}
  
  div.opentab {clear:both; margin:0; padding:0}
  div.opentab ul.siteNav {list-style-type:none; margin:3px 0 0 0; padding:1px 0}
  div.opentab ul.siteNav li {float:left; width:33%}
  div.opentab ul.siteNav ul {list-style-type:none; margin:0; padding:0}
  div.opentab ul.siteNav ul li {padding:0; margin-left:4px; float:none}
  div.opentab ul.siteNav ul li a {background:none; color:#4f4c4d; font-size:11px; padding: 0 0 0 1px; font-style:normal; width:100%;} 
  div.opentab ul.siteNav ul li a:hover {background:none; color:#4f4c4d;}
  div.opentab ul.siteNav li.eerste {font-weight:bold; width:100%}
  li.eerste {width: 100%;}
  li.eerste a {width:100%; color:red; float:none; list-style-type:none; }
  div ul.subkop {list-style-type:none; margin:0; padding:0; }  

  div.content div.opentab ul.siteNav li.kolom ul.sub li {width:100%;}
  div.content div.opentab ul.siteNav li ul.sub li a {width:100%; }

  .sm_1, .sm_1 a { width:100%; list-style-type:none; margin:0; padding:0px 0px 0px 7px; font-size:11px; font-weight:bold; font-style:normal; list-style-type:none; } 

  .bestem, .bestem ul, .bestem li { list-style-type:none; color:yellow; font-weight:normal; display:inline; }

  .landcode a { font-weight:normal; display:inline; }

  .vh li { list-style-type:none; }