CSS

* {
    padding: 0;
    margin: 0;
    font-family: Arial, Verdana, Serif;
    font-size: 15px;
    font-weight: normal;
    font-style: normal;
}

#navigation {
    background-color: black;
    height: 37px;
}

#navigation a{
    text-decoration: none;
    color: white;
    display: block;
    float: left;
    padding-top: 10px;
    padding-bottom: 10px;
    padding-left: 20px;
    padding-right: 20px
}

#logo a{
    float: left;
    padding-top: 10px;
    padding-bottom: 10px;
    padding-right: 60px;
    text-decoration: none;
    background-color: red;
    color: white;

}

#navigation a:hover {
    background-color: white;
    color: black;
}

#left {
    width: 200px;
    float: left;
}

#left a {
    text-decoration: none;
    font-size: 17px;
    padding-bottom: 10px;
    color: black;
    display: block;
    padding: 10px;
}

#left a:hover {
    background-color: black;
    color: white;
}

#content {
    background-color: gray;
    width: 520px;
    height: 155px;
    text-align: center;
    padding-top:45px;
    color: #dadada;
}