body {
  font-family: Arial, sans-serif;
  margin: 0;
  background-color: #f4f8fb;
  color: #333;
  line-height: 1.6;
}

header {
  background-color: #66CCFF;
  color: white;
  text-align: center;
  padding: 30px 20px;
}

nav {
  background-color: #3399cc;
  text-align: center;
  padding: 12px;
  position: sticky;
  top: 0;
}

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

nav a:hover {
  text-decoration: underline;
}

main {
  width: 80%;
  margin: 20px auto;
}

.card {
  background-color: white;
  margin-bottom: 20px;
  padding: 20px;
  border-left: 6px solid #66CCFF;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

h1, h2 {
  margin-top: 0;
}

ul {
  padding-left: 20px;
}

form {
  display: flex;
  flex-direction: column;
}

label {
  margin-top: 10px;
  margin-bottom: 5px;
  font-weight: bold;
}

input, textarea {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

button {
  margin-top: 15px;
  padding: 10px;
  background-color: #66CCFF;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 16px;
}

button:hover {
  background-color: #4db8e6;
}

footer {
  text-align: center;
  background-color: #66CCFF;
  color: white;
  padding: 15px;
  margin-top: 20px;
}