table{
    width: 400px;
    height: 400px; 
    border: 1px solid grey;
}
.one{
    width: 25%;
    height: 30%;
}
.two{
    height: 60%;
    width: 50%;
}
 td:nth-child(odd) {
    width:25%;
    text-align:center;
    border: 1px solid grey;
 }
 td:nth-child(even){
    width: 50%;
    text-align:center;
    border: 1px solid grey;
 }
 .large{
    width: 170px;
    height: 170px;
 }
 .small{
    width: 85px;
    height: 85px;
 }
 .red{
    background-color:red;
 }
 tr:nth-child(3) td:nth-child(even) {
  font-family: Arial;
  font-size: 12pt;
}
 tr:nth-child(3) td:nth-child(odd) {
background-color:rgb(0, 255, 30); 
}