styles.css

/* รีเซ็ตค่าเริ่มต้น */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Arial', sans-serif;
}

body {
  background-color: #f4f4f4;
  color: #333;
  line-height: 1.6;
}

/* HEADER */
header {
  background: #4D55CC;
  color: #fff;
  padding: 20px;
  text-align: center;
}

nav {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 10px;
}

nav a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  padding: 10px 15px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 5px;
  transition: 0.3s;
}

nav a:hover {
  background: rgba(255, 255, 255, 0.5);
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  background-color: #4c4cd9;
  color: white;
}

.login-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: transparent;
  color: white;
  border: 2px solid white;
  padding: 10px 20px;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.login-btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
}