body{
    font-family: 'Times New Roman';
}

#tong{
    display: flex;
}

#container{
    width: auto;
    margin: 5px;
    border: 3px solid black;
}

#header{
    text-align: center;
    background-color: #666;
    font-size: 50px;
    color:white;
    padding: 40px;
}

p{
    text-align: justify;
}

#nav{
    height: 300px;
    width: 30%;
    background-color: darkgrey;
    padding:10px;
}

#article{
    height: 300px;
    width: 70%;
    background-color: rgba(83, 77, 77, 0.199);
    padding:10px;
}

#footer{
    background-color:#444;
    color:white;
    text-align:center;
    padding:10px;
}