*{
    box-sizing: border-box;
}

body{
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;

}

header{
    background-color: #333;
    color: white;
    padding: 1rem;
}

li{
    display: inline-block;
}



header a{
    color: white;
    text-decoration: none;
}

header a:hover {
    color: yellow;
}

main{
    width: 80%;
    margin: auto;
    background-color: white;
    padding: 2rem;
    overflow: hidden;
}

article{
    float: left;
    width: 65%;
}

aside{
    display: inline-block;
    width: 30%;
    padding: 1rem;
    background-color: #eee;
}

footer{
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1rem;
}