body { font-family: Helvetica, Arial, sans-serif; font-size: 120% }
h1 { text-align: center; font-size: 200%; color: #0000ff } 
strong { font-style: normal; font-weight: normal; color: #0000ff }
*.center { text-align: center }
*.nav { vertical-align: middle }
img.nav { border-style: none }