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

body {
    font-family: Arial;
}

header {
    display: flex;
    justify-items: center;
    align-items: center;
    justify-content: space-around;
    background-color: rgb(0, 153, 255);
    padding: 5px;
}

header div:nth-child(1) a {
    color: black;
    text-decoration: none;
}

nav a {
    color: black;
}

main {
    width: 80%;
    margin: 10px auto;
}

main h1, main h2 {
    margin-bottom: 10px;
}

main h2 {
    margin-top: 30px;
}

p {
    line-height: 1.3;
}

li {
    line-height: 1.4;
    margin-left: 35px;
}