The CSS:

form {
margin: 20px 35px 20px 35px;
padding: 12px;
background-color: #D7C2F8;
font-family: "trebuchet MS", "Lucida Sans Unicode", "Lucida Grande", "Lucida Sans", Arial, sans-serif;
font-size: 14px;
color: #800000;
width: 450px;
}
input{
width: 180px;
}
label {
display: block;
width: 150px;
float: left;
font-weight: bold;
text-align: right;
margin: 0px 20px 0px 0px;
}
.submit {
width: 90px;
margin: 5px auto 5px auto;
display: block;
height: 38px;
padding: 0px;

}

Watch the 3 Part Video Tutorials to better understand how to make a contact form. 

Download the Complete Form Tutorial.  (coming soon)