styles: fond, color mm

Jeg er lige begyndt min første Asp.net app.
jeg er startet ud fra den default projekt man får når man beder om en nyt ASP.NET Web Application.
Desværre kan jeg ikke ændre farver på fonde eller baggrunde.
Hvorfor mon?

Lige meget hvad jeg ændre i styles - site.css giver det ingen ændringer:
Html koden i site.css ses nedenfor

/* DEFAULTS
----------------------------------------------------------*/

body 
{
    background: #b6b7bc;
    font-size: .80em;
    font-family: "Helvetica Neue", "Lucida Grande", "Segoe UI", Arial, Helvetica, Verdana, sans-serif;
    margin: 0px;
    padding: 0px;
    color: #000000;
}

a:link, a:visited
{
    color: #000000;
}

a:hover
{
    color: #000000;
    text-decoration: none;
}

a:active
{
    color: #000000;
}

p
{
    margin-bottom: 10px;
    line-height: 1.6em;
}


/* HEADINGS 
----------------------------------------------------------*/

h1, h2, h3, h4, h5, h6
{
    font-size: 15em;
    color: #000000;
    font-variant: small-caps;
    text-transform: none;
    font-weight: 200;
    margin-bottom: 0px;
}

h1
{
    font-size: 1.6em;
    padding-bottom: 0px;
    margin-bottom: 0px;
}

h2
{
    font-size: 1.5em;
    font-weight: 600;
}

h3
{
    font-size: 1.2em;
}

h4
{
    font-size: 1.1em;
}

h5, h6
{
    font-size: 1em;
}

/* this rule styles <h1> and <h2> tags that are the
first child of the left and right table columns */
.rightColumn > h1, .rightColumn > h2, .leftColumn > h1, .leftColumn > h2
{
    margin-top: 0px;
}


/* PRIMARY LAYOUT ELEMENTS 
----------------------------------------------------------*/

.page
{
    width: 960px;
    background-color: #fff;
    margin: 20px auto 0px auto;
    border: 1px solid #496077;
}

.header
{
    position: relative;
    margin: 0px;
    padding: 0px;
    background: #4b6c9e;
    width: 100%;
}

.header h1
{
    font-weight: 700;
    margin: 0px;
    padding: 0px 0px 0px 20px;
    color: #f9f9f9;
    border: none;
    line-height: 2em;
    font-size: 2em;
}

.main
{
    padding: 0px 12px;
    margin: 12px 8px 8px 8px;
    min-height: 420px;
}

.leftCol
{
    padding: 6px 0px;
    margin: 12px 8px 8px 8px;
    width: 200px;
    min-height: 200px;
}

.footer
{
    color: #4e5766;
    padding: 8px 0px 0px 0px;
    margin: 0px auto;
    text-align: center;
    line-height: normal;
}


/* TAB MENU 
----------------------------------------------------------*/

div.hideSkiplink
{
    background-color:#3a4f63;
    width:100%;
}

div.menu
{
    padding: 4px 0px 4px 8px;
}

div.menu ul
{
    list-style: none;
    margin: 0px;
    padding: 0px;
    width: auto;
}

div.menu ul li a, div.menu ul li a:visited
{
    background-color: #465c71;
    border: 1px #4e667d solid;
    color: #dde4ec;
    display: block;
    line-height: 1.35em;
    padding: 4px 20px;
    text-decoration: none;
    white-space: nowrap;
}

div.menu ul li a:hover
{
    background-color: #bfcbd6;
    color: #465c71;
    text-decoration: none;
}

div.menu ul li a:active
{
    background-color: #465c71;
    color: #cfdbe6;
    text-decoration: none;
}

/* FORM ELEMENTS 
----------------------------------------------------------*/

fieldset
{
    margin: 1em 0px;
    padding: 1em;
    border: 1px solid #ccc;
}

fieldset p
{
    margin: 2px 12px 10px 10px;
}

fieldset.login label, fieldset.register label, fieldset.changePassword label
{
    display: block;
}

fieldset label.inline
{
    display: inline;
}

legend
{
    font-size: 1.1em;
    font-weight: 600;
    padding: 2px 4px 8px 4px;
}

input.textEntry
{
    width: 320px;
    border: 1px solid #ccc;
}

input.passwordEntry
{
    width: 320px;
    border: 1px solid #ccc;
}

div.accountInfo
{
    width: 42%;
}

/* MISC 
----------------------------------------------------------*/

.clear
{
    clear: both;
}

.title
{
    display: block;
    float: left;
    text-align: left;
    width: auto;
}

.loginDisplay
{
    font-size: 1.1em;
    display: block;
    text-align: right;
    padding: 10px;
    color: White;
}

.loginDisplay a:link
{
    color: white;
}

.loginDisplay a:visited
{
    color: white;
}

.loginDisplay a:hover
{
    color: white;
}

.failureNotification
{
    font-size: 1.2em;
    color: Red;
}

.bold
{
    font-weight: bold;
}

.submitButton
{
    text-align: right;
    padding-right: 10px;
}