I started writing HTML again (2)

I saw it just now. I was surprised that no CSS results were available.
What is the difference... So I still paste the CSS
Haha ....

**************************************** ******************************/

 
*{

Padding: 0;

Margin: 0;

}

 
Body {

Color: #666666;

Background-color: # ffffff;

Font-family: "trebuchet ms", verdana, Helvetica, Arial, sans-serif;

Font-size: 83%;

Margin: 20px auto;

Width: 760px;

Padding-left: 10px;

Padding-Right: 10px;

}

 
H1, H2, H3, H4, H5, H6, P, pre, BLOCKQUOTE, label, UL, ol, DL,

Fieldset, address {margin: 0.75em 0 ;}

 
H1 {font-size: 167% ;}

 
H2 {font-size: 139% ;}

 
H3 {font-size: 120% ;}

 
H4 {font-size: 100% ;}

 
Li, DD {

Margin-left: 2em;

}

 
A {

Color: # cc0000;

Background-color: # ffffff;

Font-weight: normal;

Text-Decoration: none;

}

 
A: hover {

Color: # cc0000;

Background-color: # ffffff;

Font-weight: normal;

Text-Decoration: underline;

}

 
# Contact {

Padding: 0px 0px 0px 0px;

Float: right;

}

 
# Contact {

Color: # cc0000;

Background-color: # ffffff;

Font-weight: bold;

Text-Decoration: none;

}

 
# Contact A: hover {

Color: # cc0000;

Background-color: # ffffff;

Text-Decoration: underline;

}

 
# Header {

Clear: both;

Color: # cc0000;

Background-color: # ffffff;

Padding: 5px 0px 10px 0px;

Margin: 0px 0px 0px 0px;

}

 
 
# Title {

Color: # cc0000;

Background-color: # ffffff;

Font-size: 200%;

Font-weight: bold;

Padding: 0px 0px 0px 0px;

Margin: 0px 0px 0px 0px;

Float: left;

}

 
# Slogan {

Color: #666666;

Background-color: # ffffff;

Font-size: 83%;

Font-weight: normal;

Font-style: normal;

Padding: 0px 20px 0px 0px;

Margin: 0px 0px 0px 0px;

Float: left;

Width: 35%;

}

 
Ul # nav {

Line-Height: 125%;

Height: 3em;

Float: right;

Margin: 0px 0px 0px 0px;

Padding: 10px 0px 0px 0px;

List-style: none;

Text-align: center;

Width: 60%;

}

 
Ul # nav Li {

Margin: 0px 0px 0px 0px;

Padding: 0px 0px 0px 20px;

Float: right;

}

 
Ul # nav Li {

Display: block;

Font-size: small;

Color: # cc0000;

Background-color: # ffffff;

Font-weight: normal;

Text-Decoration: none;

}

 
Ul # nav Li A: hover {

Border-bottom: 3px solid # cc0000;

}

 
Ul # nav A. Selected {

Border-bottom: 3px solid # cc0000;

}

 
# Path {

Width: 760px;

Clear: both;

Float: left;

Font-size: 75%;

Font-weight: normal;

Margin: 4px 0px 5px 0px;

Border-top: 5px solid #666666;

}

 
# Path {

Font-weight: normal;

}

 
# Maincontent {

Font-size: 100%;

Padding: 0px 5px 5px 0px;

Margin: 0px 0px 0px 0px;

Width: 540px;

Float: left;

}

 
# Sidecontent {

Font-family: Arial, sans-serif;

Color: #666666;

Background-color: # ffffff;

Font-size: 75%;

Padding: 10px 10px 20px 10px;

Margin: 0px 0px 10px 0px;

Width: 180px;

Float: right;

Border: #999999 solid thin;

}

 
# Sidecontent {

Color: # cc0000;

Background-color: # ffffff;

}

 
# Sidecontent H2 {margin: 0.75em 0.25em 0.25em 0em ;}

 
# Sidecontent ul {margin: 0.25em 0.25em 0.25em 0.25em ;}

 
# Footer {

Height: 40px;

Color: #666666;

Background-color: # ffffff;

Border-top: 5px solid #666666;

Font-size: 75%;

Line-Height: 1.5em;

Width: 760px;

Clear: both;

}

 
# Footer {

Color: # cc0000;

Background-color: # ffffff;

Text-Decoration: none;

}

 
# Footer A: hover {

Color: # cc0000;

Background-color: # ffffff;

Font-weight: normal;

Text-Decoration: underline;

}

 
# Copyrightdesign {

Color: #666666;

Background-color: # ffffff;

Padding: 5px 20px 5px 0px;

Width: 580px;

Float: left;

}

 
# Footercontact {

Color: # cc0000;

Background-color: # ffffff;

Padding: 5px 0px 5px 0px;

Float: right;

}