*{
    box-sizing: border-box;
}
body{
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
}
header{
    padding: 50px;
    background-color: rgb(235, 231, 44)
    
}

nav{
    display: flex;
    flex-direction: row;
    background-color: #333;
}

nav a{
    color: white;
    padding: 14px 20px;
    text-decoration: none;
}

.row{
    display: flex;
    flex-wrap: wrap;
    
}
aside{
    flex: 30%;
    background-color: beige;
    padding: 50px;
}
section{
    flex: 70%;
    background-color: khaki;
    padding: 20px;
}
footer{
    padding: 60px;
    text-align: center;
    background-color: palevioletred;
}
 @media screen and (max-width: 700px){
    nav, .row{
        flex-direction: column;
    }
 }