#header {
    margin-top: 0px;
    margin-bottom: 0px;
    margin-left: 20px;
}

#content {
    margin: 50px 50px;
}

#content img {
    padding: 5px;

    border: 3px solid black;

    margin-left: 20px;
    margin-right: 20px;
}

#footer {
    text-align: left;
    margin-left: 20px;
}