body {
background-color: aqua;
color: navy;
font-family: Arial, Courier New, monospace;
font-size: 12pt; 
}
p, pre {
margin-left: 10%;
margin-right: 10%;
}
p {
text-align: justify;
}
h1, h2, h3, h4, h5, h6 {
background-color: navy;
color: aqua;
text-transform: capitalize;
text-align: center;
}
h1 {font-size: 24pt; }
h2 {font-size: 20pt; }
h3 {font-size: 16pt; }
h4 {font-size: 14pt; }
h5 {font-size: 12pt; }
h6 {font-size: 9pt; }