sidebar problem

body        {color: #000; background: #666666;}
#wrapper    {width: 933px; margin: auto; text-align: left; background-color: #FFF;}
#header     {height: 295px; background-image:url(header.png); }
#main       {width: 603px; padding: 20px; float: left; background-color:#FFF }
#sidebar    {width: 270px; padding: 10px; padding-top: 20px; float: left; background-color:#FFF }
#footer     {clear: both; height: 100px; padding: 20px; background-color:#FFF } 
#cssmenu ul,
#cssmenu li,
#cssmenu span,
#cssmenu a {
  margin: 0;
  padding: 0;
  position: relative;
}
#cssmenu {
  height: 49px;
  border-radius: 5px 5px 0 0;
  -moz-border-radius: 5px 5px 0 0;
  -webkit-border-radius: 5px 5px 0 0;
  background: #fefefe;
  background: -moz-linear-gradient(top, #fefefe 0%, #eee9f0 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #fefefe), color-stop(100%, #eee9f0));
  background: -webkit-linear-gradient(top, #fefefe 0%, #eee9f0 100%);
  background: -o-linear-gradient(top, #fefefe 0%, #eee9f0 100%);
  background: -ms-linear-gradient(top, #fefefe 0%, #eee9f0 100%);
  background: linear-gradient(top, #fefefe 0%, #eee9f0 100%);
  border-bottom: 2px solid #c9c610;
  width: 933px;
}
#cssmenu:after,
#cssmenu ul:after {
  content: '';
  display: block;
  clear: both;
}
#cssmenu a {
  background: #fefefe;
  background: -moz-linear-gradient(top, #fefefe 0%, #ececec 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #fefefe), color-stop(100%, #ececec));
  background: -webkit-linear-gradient(top, #fefefe 0%, #ececec 100%);
  background: -o-linear-gradient(top, #fefefe 0%, #ececec 100%);
  background: -ms-linear-gradient(top, #fefefe 0%, #ececec 100%);
  background: linear-gradient(top, #fefefe 0%, #ececec 100%);
  color: #000;
  display: inline-block;
  font-family: Helvetica, Arial, Verdana, sans-serif;
  font-size: 12px;
  line-height: 49px;
  padding: 0 20px;
  text-decoration: none;
}
#cssmenu ul {
  list-style: none;
}
#cssmenu > ul {
  float: left;
}
#cssmenu > ul > li {
  float: left;
}
#cssmenu > ul > li > a {
  color: #000;
  font-size: 12px;
}
#cssmenu > ul > li:hover:after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  position: absolute;
  left: 50%;
  bottom: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 10px solid #c9c610;
  margin-left: -10px;
}
#cssmenu > ul > li:first-child > a {
  border-radius: 5px 0 0 0;
  -moz-border-radius: 5px 0 0 0;
  -webkit-border-radius: 5px 0 0 0;
}
#cssmenu > ul > li.active:after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  position: absolute;
  left: 50%;
  bottom: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 10px solid #c9c610;
  margin-left: -10px;
}
#cssmenu > ul > li.active > a {
  -moz-box-shadow: inset 0 0 2px rgba(0, 0, 0, 0.1);
  -webkit-box-shadow: inset 0 0 2px rgba(0, 0, 0, 0.1);
  box-shadow: inset 0 0 2px rgba(0, 0, 0, 0.1);
  background: #ececec;
  background: -moz-linear-gradient(top, #ececec 0%, #ffeeff ef 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #ececec), color-stop(100%, #ffeeff ef));
  background: -webkit-linear-gradient(top, #ececec 0%, #ffeeff ef 100%);
  background: -o-linear-gradient(top, #ececec 0%, #ffeeff ef 100%);
  background: -ms-linear-gradient(top, #ececec 0%, #ffeeff ef 100%);
  background: linear-gradient(top, #ececec 0%, #ffeeff ef 100%);
}
#cssmenu > ul > li:hover > a {
  background: #ececec;
  background: -moz-linear-gradient(top, #ececec 0%, #ffeeff ef 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #ececec), color-stop(100%, #ffeeff ef));
  background: -webkit-linear-gradient(top, #ececec 0%, #ffeeff ef 100%);
  background: -o-linear-gradient(top, #ececec 0%, #ffeeff ef 100%);
  background: -ms-linear-gradient(top, #ececec 0%, #ffeeff ef 100%);
  background: linear-gradient(top, #ececec 0%, #ffeeff ef 100%);
  -moz-box-shadow: inset 0 0 2px rgba(0, 0, 0, 0.1);
  -webkit-box-shadow: inset 0 0 2px rgba(0, 0, 0, 0.1);
  box-shadow: inset 0 0 2px rgba(0, 0, 0, 0.1);
}
#cssmenu .has-sub {
  z-index: 1;
}
#cssmenu .has-sub:hover > ul {
  display: block;
}
#cssmenu .has-sub ul {
  display: none;
  position: absolute;
  width: 200px;
  top: 100%;
  left: 0;
}
#cssmenu .has-sub ul li {
  *margin-bottom: -1px;
}
#cssmenu .has-sub ul li a {
  background: #c9c610;
  border-bottom: 1px dotted #edea1f;
  filter: none;
  font-size: 11px;
  display: block;
  line-height: 120%;
  padding: 10px;
  color: #ffffff;
}
#cssmenu .has-sub ul li:hover a {
  background: #9a970c;
}
#cssmenu .has-sub .has-sub:hover > ul {
  display: block;
}
#cssmenu .has-sub .has-sub ul {
  display: none;
  position: absolute;
  left: 100%;
  top: 0;
}
#cssmenu .has-sub .has-sub ul li a {
  background: #9a970c;
  border-bottom: 1px dotted #edea1f;
}
#cssmenu .has-sub .has-sub ul li a:hover {
  background: #82800a;
}