CSS in HTML4

div#header, div#footer, div#content, div#post {
    border: 1px black;
    margin: 7px;
    margin-bottom: 18px;
    padding: 10px;
    background-color: red;
}

div#header, div#footer {
    color: white;
    background-color: #445;
    margin-bottom: 8px;
}

div#content {
    background-color: #ddf;
}

div#menu ul {
    margin: 1;
    padding: 2;
}

div#menu ul li {
    display: inline; 
    margin: 8px;
}