.row {
  width: 100%;
  text-align: center;
}


.col1 {
  display: inline-table;
  vertical-align: top;
  min-height: 1px;
  width: 300px;
  overflow: auto;
}


.col2 {
  display: inline-table;
  vertical-align: top;
  min-height: 1px;
  width: 510px;
  overflow: auto;
}

.col3 {
  display: inline-table;
  vertical-align: top;
  min-height: 1px;
  width: 300px;
  overflow: auto;
}






.clear {
  border: none;
  clear: both;
}