td,th {
border: 1px solid black;
height: 50px;
width: 50px;
font-size: 25px;
color: blue;
text-align: center;
}
h1 {
    font-size: 40px;
    color: green;
}
p {
    font-size:20px;
    color: blue;
}
button {
    font-size:30px;
    color: red;
}