#t1 {
    position: relative;
  }
#t1-checkbox {
    display: none;
  }
#t1-checkbox:checked + #t1:after {
    content: "these, people";
    position: absolute;
    bottom: 0;
    top: 0;
    left: 0;
    right: 0;
    text-align: center;
    background: white;
  }