.dspla  {
     overflow-y: scroll;
     margin-top: 5vh;
     margin-left: 20%;
     margin-right: 20%;
     margin-bottom: 10vh;
}


.hrd-disp  {
      text-align: center;
      color: rgb(152, 15, 194);
}


span.colour {
     display: inline; /* the default for span */
     width: 1.5rem;
     height: 0.7rem;
     padding: 5px;
     border: 1px solid blue;  
     background-color: rgb(155, 235, 221); 
}