/* style of tooltip */
#tooltip {
    text-align: left;
    padding: 16px;
    background-color: darkslategray;
    border: 1px solid black;
    width: auto;
    opacity: 0;
    color: white;
    position: absolute;
  }

  /* style of tooltip2 */
  #tooltip2 {
    text-align: left;
    padding: 5px;
    background-color: darkslategray;
    border: 1px solid black;
    width: 200px;
    opacity: 0;
    color: white;
    position: absolute;
  }

/* style of tooltip3 */
  #tooltip3 {
    text-align: left;
    padding: 5px;
    background-color: darkslategray;
    border: 1px solid black;
    width: 200px;
    opacity: 0;
    color: white;
    position: absolute;
  }

  /* style of heading and description */
  #btm {
    position: relative;
    width: 1000px;
    height: 100px;
    left: 50px;
    color: darkslategray;
  }

  /* style of map */
  #map {
    position: absolute;
    width: 1000px;
    height: 650px;
    background-color: black;
    float: left;
    left: 50px;
  }

  /* style of button area */
  #buttons1 {
    width: 50px;
    height: 800px;
    float: left;
  }