.table-of-contents {

  border: 2px solid #5ab4bd;

  padding: 15px;

  background-color: #f0f9fa;

  border-radius: 8px;

  font-size: 16px;

  line-height: 1.6;

  box-shadow: 2px 2px 5px rgba(0,0,0,0.1);

}