.head-content {
 margin-left: 10px;
 text-align: left;
 }

body {
  width: 980px;
}

div.block {
 padding-left: 5px;
 padding-right: 5px;
}

html {
  width: 990px;
}

section.left    {
 float: left;
 width: 400;
}

section.right   {
  float: right;
  width: 600px;
}

.s1000 {display: none;}
.s1100 {display: none;}
.s1200 {display: none;}
.s1300 {display: none;}
.s1400 {display: none;}
.s1800 {display: none;}