#jointbox {
  width: 100%;
  height: 550px;
  padding: 0;
  margin: 0;
}

#jointbox .category {
  float: left;
  width: 205px;
  height: 100%;
  margin-right: -200px;
  padding: 0;
  border-right: #dfdfdf dashed 1px;
  overflow-y: auto;
  overflow-x: hidden;
}

#jointbox .category .list-group-item:first-child {
	border-top: 0;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}
#jointbox .category .list-group-item:last-child {
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}
#jointbox .category .list-group-item {
	border-left: 0;
	border-right: 0
}

#jointbox .content {
  margin-left: 205px;
  height: 430px;
  padding: 20px;
  overflow-y: auto;
  overflow-x: hidden;
}

#jointbox .content .none {
  color: #c0c0c0;
  text-align: center;
  padding-top: 70px;
}

#jointbox .list-group-item {
  padding: 8px 5px 3px 7px;
}

@media (max-width: 600px) {
  #jointbox {
    overflow: auto;
  }
  #jointbox .category {
    width: 100%;
    height: auto;
    border: 0;
  }
  #jointbox .content {
    float: left;
    width: 100%;
    height: auto;
    margin-left: 0;
    padding: 10px 10px 120px 10px;
  }
}