div#header
{
    background-color: green;
    border: 5px solid black;
}
div#slogan
{
    background-color: teal;
}
body{
    background: lightblue url("https://www.wallpaperup.com/uploads/wallpapers/2016/03/01/903094/49f9a99be720780a1f6294d76e599577-1400.jpg");
}
div#nav
{
    background-color: green;
    border: 2px solid black;
    float: left;
    width: 150px;
    height: 300px;
}

div#content
{   background-color: lightblue;
    border: 2px solid black;
    float: center;
    
}
*{
    box-sizing: content-box;
}
#home1
{
    width: 500px;
    height: 600px;
}
#analog
{
    width: 50%;
    height: 400px;
}