main.css

/* the styles for the html elements */

html {
    background-color: rgb(192, 192, 192);
}

body {
    margin-top: 0;
    font-family: Arial, Helvetica, sans-serif;
    width: 80%;
    margin: 0 auto;
    background-color: white;
    border: 1px solid black;
    padding: .5em 2em;
}

header {
    margin: 0;
    border-bottom: 2px solid black;
}

header h1 {
    margin: 0;
    padding: .5em 0;
    color: black;
}

main {
    margin: 0;
}

aside {
    float: left;
    width: 150px;
}

nav ul {
    list-style-type: none;
    margin-left: 0;
    padding-left: 0;
}

nav ul li {
    padding-bottom: 0.5em;
}

section {
    float: left;
    width: 500px;
    padding-bottom: 1.5em;
}

footer {
    clear: both;
    margin-top: 1em;
    border-top: 2px solid black;
}

footer p {
    text-align: right;
    font-size: 50%;
    margin: 1em 0;
}

h1 {
    font-size: 150%;
    margin: 0;
    padding: .5em 0 .25em;
}

h2 {
    font-size: 120%;
    margin: 0;
    padding: .25em 0 .5em;
}

h1,
h2 {
    color: rgb(208, 133, 4);
}

ul {
    margin: 0 0 1em 0;
    padding: 0 0 0 2.5em;
}

li {
    margin: 0;
    padding: 0;
}

a {
    color: rgb(41, 64, 124);
    font-weight: bold;
}

a:hover {
    color: rgb(208, 133, 4);
}

table {
    border: 1px solid black;
    border-collapse: collapse;
}

td,
th {
    width: 20em;
    border: 1px dashed black;
    padding: .2em .5em .2em .5em;
    vertical-align: top;
    text-align: left;
}

form {
    margin: 0;
}

br {
    clear: left;
}


/* the styles for classes */

.right {
    text-align: right;
}

.last_paragraph {
    margin-bottom: 2em;
}


/********************************************************************
* Additional styles for the Contact Manager application
********************************************************************/

#add_product_form {
    margin: .5em 0 1em;
}

#add_product_form label {
    width: 7em;
    padding-right: 1em;
    padding-bottom: .5em;
    float: left;
}

#add_product_form input {
    float: center;
}

#add_product_form input[text] {
    width: 30em;
}