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

div {
    width: 80vw;
    margin: auto;
    background-color: royalblue;
    text-align: center;
}

header {
    background-color: yellowgreen;
}

header h1 {
    color: darkgreen;
    font-size: calc(4px + 4vw);
}

header p {
    font-size: calc(4px + 4vw);
}

nav {
    background-color: blueviolet;
}

nav ul {
    padding-left: 0;
}

nav ul li {
    display: inline;
    font-size: calc(2px + 2vw);
    margin: 3% 3% 3% 3%;
}

nav ul li a {
    text-decoration: none;
    color: white;
}

nav ul li a:hover, footer a:hover{
    color: yellowgreen;
}


main {
    background-color: darkred;
}

main p {
    color: yellow;
    border: 5px rebeccapurple dashed;
    font-size: calc(1px + 1.5vw);
}

footer {
    background-color: gray;
}

footer p {
    font-size: calc(2px + 2vw);
}

img{
    max-width: 100%;
}