body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background-color: #8caaaa;
  color: #fff;
  padding: 1em;
  text-align: center;
}

nav a {
  color: #fff;
  margin: 0 1em;
  text-decoration: none;
}

main {
  padding: 1em;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  border: 1px solid #ccc;
  padding: 0.5em;
  text-align: left;
}

form {
  max-width: 400px;
  margin: 0 auto;
}

label {
  display: block;
  margin-top: 1em;
}

input, textarea, select {
  width: 100%;
  padding: 0.5em;
  margin-top: 0.5em;
}

button {
  margin-top: 1em;
  padding: 0.5em 1em;
  background-color: #007BFF;
  color: #fff;
  border: none;
  cursor: pointer;
}

button:hover {
  background-color: #0056b3;
}