*{
    padding: 0px;
    margin: 0px;
    box-sizing: border-box;
}

header {
    background-color: brown;
}

header>h1,
header>h2 {
    color: lime;
    text-align: center;
    font-family: Courier, monospace;
    padding: 0px 20px;
}

header>h1 {
    font-size: 3rem;
}

header>h2 {
    font-size: 2rem;
}

nav>ul {
    list-style-type: none;
    display: flex;
    flex-direction: column;
    margin: auto;
}

nav>ul>li {
    width: 100%;
    text-align: justify;
}

nav>ul>li>a {
    background-color: lightgray;
    display: block;
    text-align: center;
    padding: 10px 0px;
    border: black solid 1px;
}

 nav>ul>li>a:active {
    background-color: darkgray;
}


main {
    height: fit-content;
    background-color: aquamarine;
}

main>article {
    margin: 10px 15px;
    flex-direction: column;
    max-width: 1817px;
    margin: auto;
}

main>article>section>section{
    padding: 10px 10px;
    border: beige solid 1px;
    background-color:bisque;
    text-align: justify;
}

main>article>section>img{
    width: 18rem;
}
footer {
    background-color: lightcyan;
}

/* Markus validator */
@media screen and (max-width: 290px){
    main>article>section>img{
        width: 6rem;    
    }
}

/* Tablet */
@media screen and (min-width: 600px) {
    header>h1{
        font-size: 5rem;
    }

    header>h2{
        font-size: 2.2rem;
    }

    nav>ul{
        flex-direction: row;
    }
    main{
        max-width: 1024px;
        margin: auto;
    }
    
    main>article>h2{
        font-size: 2rem;
    }
    main>article>section>section{
        font-size: 1.4rem;
    }

    footer{
        max-width: 1024px;
        margin: auto;
    }
}

@media screen and (min-width: 1024px){
    body{
        margin: auto;
    }
    
    nav>ul {
        list-style-type: none;
        display: flex;
        max-width: 1817px;
    }
    
    nav>ul>li{
        flex: auto;
        font-size: 2rem;
        margin: auto;
    }

    nav>ul>li>a {
        height: 6rem;
        display: flex;
        margin: auto;
        align-items: center;
        justify-content: center;
    }

    main{
        max-width: none;
    }
    main>article>h2{
        margin: auto;
    }
    main>article>section{
        padding: 0px;
        margin: auto;
        display: flex;
        flex-direction: row-reverse;
        background-color: aliceblue;
        border: bisque solid 1px;
        max-width: none;
    }

    main>article>section>img{
        width: 25rem;
    }

    main>article>section>section>p{
        margin-top: 110px;
    }

    footer{
        max-width: 1817px;
        margin: auto;
    }
}