* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: #f4f6f8;
  color: #333;
  line-height: 1.6;
  padding: 20px;
}

nav {
  text-align: center;
  margin-bottom: 30px;
}

nav a {
  text-decoration: none;
  color: #1e3a8a;
  margin: 0 15px;
  font-weight: bold;
}

nav a:hover {
  color: #2563eb;
}

.container {
  max-width: 900px;
  margin: auto;
  background-color: #fff;
  padding: 40px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: #1e3a8a;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: #1e40af;
  border-bottom: 2px solid #1e40af;
  display: inline-block;
  padding-bottom: 3px;
}

ul {
  margin-left: 20px;
  margin-bottom: 10px;
}

li {
  margin-bottom: 5px;
}

input, textarea {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

input[type="submit"], input[type="reset"] {
  width: auto;
  background-color: #1e3a8a;
  color: #fff;
  border: none;
  cursor: pointer;
  padding: 10px 20px;
  margin-top: 10px;
  border-radius: 5px;
}

input[type="submit"]:hover, input[type="reset"]:hover {
  background-color: #2563eb;
}