/* -----------div tips------------- */

  div.soln {
    padding: 1em;
    margin: 1em 0;
    padding-left: 100px;
    background-size: 70px;
    background-repeat: no-repeat;
    background-position: 15px center;
    min-height: 60px;
    color: #2e4d38;
    background-color: #ededed;
    border: solid 5px #b5b5b5;
  }