a {text-decoration:none; color: teal; font-weight:bold}
a.ex1:hover {color:red;}
a.visited {text-decoration:none}
body {margin-top: 100px; background-color: #FFFFE8}
h1 {text-align:center; color: #2C5783; font-family:"Goudy Old Style"; font-size: 48px}
h3 {text-align:center; color: #2C5783; font-family:"Goudy Old Style"; font-size: 20px}
.main {border-top-width:1px; border-top-style:solid; border-top-color: #2C5783; width:840px; margin:auto; text-align:center; color: #2C5783; font-family: "Goudy Old Style"; font-size: 28px}
.base {border-top-width:1px; border-top-style:solid; border-top-color: #2C5783; width:840px; margin:auto; text-align:center; color: #2C5783; font-family: "Goudy Old Style"; font-size: 16px}
.unit {margin:auto; color: #2C5783; width:210px; font-family: "Goudy Old Style"; font-size: 16px}
.row::after {content: ""; clear: both; display: table;}
.column {float: left; width:23%; padding: 8px;}
.pic {border-width:3px; border-color:#2C5783; border-style:solid; height:120px; width:160px;}
.pic:hover {border-color:red}