body 
{background-color: aliceblue;
font-family:arial;
line-height:1.5;}
header 
{width:100%;
height:auto;
border-bottom:3px solid #C8AAAA;
text-align:center;
background-color:skyblue;
border-radius:0px 0px 20px 20px;}
h1 
{margin:10px;}
nav 
{float:left;
width:350px;
height:1200px;
margin:0px 50px 0px 0px;
background-color:lightyellow;
padding:3px;
border:2px dashed #C8AAAA;}
main
{background-color:aliceblue;
float:left;
width:calc(100% - 400px);}
section 
{margin:20px;}
h2
{text-align:center;
margin:10px}
nav ol 
{padding-left:50px;}
p
{margin:3px;
text-indent: 20px;}
a
{text-decoration:none;}
a:hover 
{color:red;}
h3 
{text-align:left;
margin:10px;
margin-top:50px;
text-shadow: 2px 2px 4px #8FABD4, 1px 1px 6px #4A70A9}
td
{padding:1px;
border:1px solid #C8AAAA;
text-align:center;}
img 
{width:180px;
height:120px;}
mark 
{background-color:#FBEF76;}
article 
{margin-bottom: 15px;}
button 
{background-color: lightblue;
border: none;
border:2px solid #C8AAAA;
padding: 10px 20px;
border-radius: 15px;
cursor: pointer;}
footer 
{clear:both;
background-color:plum;
text-align:center;
padding:10px;
margin-top:20px;
border-radius:30px;}