div#main {
  margin: 40px auto 60px auto;
  padding: 0 10px;
  width: 940px;
}
div#main h2 {
  font-size: 19px;
  line-height: 27px;
  font-weight: bold;
  margin: 0 0 50px 14px;
  padding: 0;
  color: #303030;
  background-color: inherit;
  display: block;
}
div.guide-section {
  margin: 0 0 50px 0;
}
div.guide-section div.section_head {
  margin: 0 0 38px 16px;
  border-top: 1px solid #DEDEDE;
  position: relative;
}
div.guide-section div.section_head h3 {
  font-size: 19px;
  font-weight: normal;
  top: -14px;
  position: absolute;
  background-color: #FFF;
  padding-right: 20px;
}
div.guide-section ul.tool-list {
  width: 960px;
  margin-right:-20px;
  zoom: 1;
}
div.guide-section ul.tool-list:after {
  content: "";
  display: block;
  clear: both;
  height: 0;
}
div.guide-section ul.tool-list li.tool-unit {
  position: relative;
  width: 300px;
  height: 200px;
  margin: 0 0 52px 20px;
  padding-left: 160px;
  float: left;
  display: inline;
}
div.guide-section ul.tool-list li.tool-unit:nth-child(odd) {
  clear: both;
}
div.guide-section ul li.tool-unit h4 {
  font-size: 16px;
  line-height: 23px;
  font-weight: bold;
  padding-top: 10px;
  margin: 0 0 12px 0;
}
div.guide-section ul li.tool-unit p {
  font-size: 13px;
  line-height: 21px;
  margin-right: 30px;
  color: #666;
}
div.guide-section ul li.tool-unit a {
  text-decoration: none;
}
div.guide-section ul li.tool-unit img.thumbnail {
  width: 140px;
  height: 140px;
  position: absolute;
  top: 0;
  left: 0;
}
div.guide-section ul li.tool-unit a.dl-button {
  position: absolute;
  top: 160px;
  left: 0;
  width: 140px;
  text-align: center;
}
div.guide-section ul li.tool-unit a.dl-button.noimg {
  display: block;
  border-radius: 6px;
  -webkit-border-radius: 6px;
  -moz-border-radius: 6px;
  -o-border-radius: 6px;
  -ms-border-radius: 6px;
  background-color: #000;
  border: 1px solid #000;
  font-size: 12px;
  width: 128px;
  padding: 5px;
  color: #FFF;
}
div.guide-section ul li.tool-unit a.dl-button.noimg:hover {
  background-color: #333;
  border: 1px solid #333;
}