body{
    background-color: grey;
    }
 
div{
    border: 1px solid white;
    padding: 14px;
    }
#container{
    margin-right: auto;
    margin-left: auto;
    width: 1000px;
    text-align: center;
    background-color: white;
    }
#header{
    background-color: blue;
    text-align: center;
    font-family: "Sofia";
    font-size: 22px;
    color:white;
    }
#content{
    display: table-row;
    background-color: lightgrey;
    }
#nav{
    display: table-cell;
    width: 180px;
    }
#main{
    text-align: center;
    display: table-cell;
    width: 760px;
    }
#footer{
    text-align: right;
    background-color: grey;
    }