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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f5f5;
  padding: 20px;
}

header {
  background-color: #333;
  color: #fff;
  padding: 10px 0;
  margin-bottom: 20px;
}

.logo {
  font-size: 1.5em;
  margin-left: 20px;
  display: inline-block;
}

nav ul {
  list-style-type: none;
  float: right;
  margin-right: 20px;
}

nav ul li {
  display: inline;
  margin-left: 10px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
}

main {
  background-color: #fff;
  padding: 20px;
  margin-bottom: 20px;
}

section {
  margin-bottom: 20px;
}

h1, h2, h3 {
  color: #666;
}

ul {
  padding-left: 20px;
}

form {
  background-color: #f9f9f9;
  padding: 20px;
}

form label {
  display: block;
  margin-bottom: 10px;
}

form input[type="text"],
form input[type="email"],
form select {
  width: 100%;
  padding: 10px;
  margin-bottom: 20px;
  border: 1px solid #ddd;
}

form input[type="submit"] {
  padding: 10px 20px;
  background-color: #333;
  color: #fff;
  border: 0;
}

form input[type="submit"]:hover {
  background-color: #444;
  cursor: pointer;
}

a {
  color: #333;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}