body, html {
  overflow-x: hidden;
  font-family: '微软雅黑','宋体','黑体';
  color: #333
}

#leftmenu {
  right: 100px;
  width: 290px;
  left: auto;
  top: 125px;
}

#leftmenu h3 {
  font-size: 14px;
  border-bottom: 1px solid #ccc;
  font-weight: bold;
  color: #333;
}


.github-pic {
  width: 170px;
  border: 1px dashed gray;
  background-color: #f7f7f7;
  margin-top: 5px;
}