body {
    margin: 0 5%;
}

h1, h2, h3, h4 {
  text-align: center;
  text-decoration: underline;
  margin-bottom: 55px;
}
p {
    margin: 6px auto;
    word-wrap: break-word;
}
p.mono {
    font-family: 'Courier New', Courier, monospace;
}
h1 {
    font-size: 32px;
}

img {
    width: 300px;
}
html{
    background-color: dodgerblue
}
a {
    color: black;
    text-align: center;
}
.center {
    margin: 0 auto;
    text-align: center;
}