body { background: lemonchiffon;
 margin-left:10em;
 margin-right: 10em;
 margin-top:3em}
h1 { background: teal; font-size: 1.5em; }
h2 { font-size: 1.2em; }
table,th,td{
border-style: solid;
boder-color: silver;
boder-collapse: collapse;
background-color:lightgrey;}
th{
text-align:left;
}