body {
    background-image: url(images/background.png);
    background-repeat: no-repeat;
    background-size: 100%;
    background-attachment: fixed;
    color: black;
    font-family: Tahoma, Geneva, sans-serif;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
}

.Header h1 {
    text-align: center;
    left: 0;
    color: red;
}

iframe{
    display:block;
    width: 100%;
}

.Menu{
    position: sticky;
    top: 0;
    width: 100%;
}

.Menu ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #e5dbdb;
}

.Menu li {
    float: left;
}

.Menu li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none; 
}

.Menu li a:hover {
    background-color: #d5d5d5;
}

.Content{ 
    width: 50%;
    position: center;
    padding-left: 356px;
    text-align: center;
    color: #e5dbdb;
}

.Footer {
    width: 100%;
    text-align: center;
    height: 48px;
    position: static;
    left: 0;
    bottom: 0;
    background-color: #e5dbdb;
}