h1, h2, h3 {font-family:monospace; background-color:aqua; text-align:center}
body {background-color:white}
p {background-color:white; text-align:center; font-weight:bold}
#heading {background-color:white; color:blue; text-align:center}
#desktop-content {display:none} 
#handheld-content {background-color:black; text-align:center; color:white}