*{
    padding: 0px;
    margin: 0px;
    box-sizing: border-box;
}
body{
    background-color: beige;
}
header > h1, header > h2{
    background-color: brown;
    color: lightgreen;
    text-align: center;
    font-family:  Courier, monospace;
    padding: 0px 20px;
}
header > h1{
    font-size:3rem;
}
header > h2{
    font-size: 3rem;
}
nav > ul{
    list-style-type: none;
    display:flex;
    flex-direction:column;
    /* align-items: center; */
}
nav>ul>li{
    width: 100%;
}
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: rgb(84, 99, 84);
}
main>article{
    padding: 10px 15px;
}
main{
    min-height: 500px;
    background-color: aquamarine;
}
footer{
    background-color: lightslategray;
}
/* Surfplatta */
@media screen and (min-width: 600px){
    header>h1, header>h2{
        background-color: rgb(40, 124, 68);
    }
    header{
        border: solid;
    }
    article{
        max-width: 800px;
        margin:auto;
    }
    main{
        max-width: 800px;
        margin: auto;
    }
    nav > ul{
        flex-direction:row;
    }
}
/* Dator */
@media screen and (min-width: 900px){
    nav > ul{
        flex-direction:row;
    }
    main{
        max-width:1500px;
    }
    header>h1, header>h2{
        background-color: rgb(27, 27, 192);
    }
}