body {
    font-family: "courier new", "Helvetica", Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: rgb(240, 255, 250);
    line-height: 1.4;

}

header {
  background: rgb(40, 90, 100);
    padding: 10px 0;
    letter-spacing: 3px;

}


nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    padding: 0;
    margin: 0;
}

nav ul li {
    margin: 0 45px;
}

nav ul li a {
    text-decoration: none;
    color: black;
    font-size: 22px;
}

main {
    padding: 20px;
    text-align: center;
      letter-spacing: 3px;
      white-space: pre-wrap;

}

footer {
  background: rgb(40, 90, 100);
    padding: 1px 0;
    position: absolute;
    bottom: 0;
    width: 100%;
}