.content-round {
        width: auto;
	margin: 25px 0;
	font-size: 0.9em;
	min-width: 400px;
       <!-- table-layout: fixed; --!>
	border-radius: 5px 5px 0 0;
        border-collapse: collapse;
	box-shadow: 0 0 20px rgba(0, 0, 0, 0.15);
      }

      .content-round tbody {
    /*  display: block;   /* this is the offending line that stops the colSpan working*/
        width: 100%;
       overflow: auto; 
        height: 950px;
	border-bottom: 4px solid #dddddd;
      }


      .content-round thead tr {
       
	/* display: block;/*  this is the offending line that stops the colSpan working*/
	
	border-bottom: 1px solid #dddddd;
      

	}

 .content-round td {
height: 100;
}

      .content-round thead {
        background: black;
        color: #fff;
      }

.content-round thead tr {
  background-color: #4CAF50;
  color: #ffffff;
  text-align: left;
  font-weight: bold;
}

      .content-round th,
      .content-round td {
        padding: 5px;
        text-align: center;
        width: 100px;
	
      }
.content-round tbody tr:last-of-type {
  border-bottom: 2px solid #009879;
}