td.controls {
    vertical-align: center;
   }
  ul.mathtype {
    list-style-type:none;
    columns: 2;
    -webkit-columns: 2;
    -moz-columns: 2;
  }
  td.lesson {
  width:4em;
  text-align:right;
  font-family:Brush Script MT;
  font-size: 24px;
  padding: 5px 0 5px 0;
  }
  input.lesson {
  text-align:right;
  border-style: none;
  border-bottom: medium solid black;
  font-family: Brush Script MT;
  font-size: 24px;
  width: 4em;
  }
  operator {
  font-family: Brush Script MT;
  font-size: 24px;
  padding: 5px 0 5px 0;
  }