body {
    border: 3px black solid;
}

nav {
    border-top: 3px black solid;
    border-bottom: 3px black solid;
    padding: 5px;
}

p {
  text-indent: 30px;
}

#form {
    padding: 10px;
}

footer {
    border-top: 3px black solid;
}

table th, td {
    border: 1px solid black;
    border-collapse: collapse;
    padding: 5px;
}