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

body {
  background-color: #f4f6f8;
  padding: 20px;
}

p {
  text-align: center;
  font-weight: bold;
  font-size: 20px;
  margin: 20px 0;
}

/* ================= TABLE ================= */
table {
  margin: 30px auto;
  border-collapse: collapse;
  width: 90%;
  background-color: #ffffff;
}

th,
td {
  border: 1px solid #ccc;
  padding: 10px;
  text-align: center;
}

th {
  background-color: #e3f2fd;
  color: #333;
}

.thu th {
  background-color: #1976d2;
  color: #ffffff;
}

/* Dòng xen kẽ */
tr:nth-child(even) {
  background-color: #f9f9f9;
}

/* Hover */
tr:hover {
  background-color: #eaf3ff;
}

/* ================= IMAGE ================= */
img {
  border-radius: 8px;
  transition: transform 0.3s ease;
}

img:hover {
  transform: scale(1.1);
}

/* ================= SECTION ================= */
section {
  margin: 40px 0;
}

/* ================= BANNER ================= */
.banner {
  background: #ccc;
  height: 150px;
  margin-bottom: 30px;
}

/* ================= FORM REGISTER ================= */
.register {
  width: 400px;
  margin: 40px auto;
  padding: 20px 25px;
  background: #ffffff;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.register h3 {
  text-align: center;
  margin-bottom: 20px;
  color: #1976d2;
}

/* Input */
.register input[type="text"],
.register input[type="password"],
.register input[type="file"] {
  width: 100%;
  padding: 8px;
  margin: 6px 0 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

s.register input[type="radio"],
.register input[type="checkbox"] {
  width: auto;
  margin-right: 5px;
}

/* Button */
.register button {
  width: 100%;
  padding: 10px;
  background: #1976d2;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
}

.register button:hover {
  background: #125aa0;
}
.menu-item {
  display: block; /* Biến thành khối */
  width: 220px;
  padding: 15px;
  margin: 10px auto;
  text-align: center;

  background-color: #125aa0;
  color: white;
  text-decoration: none; /* Bỏ gạch chân */

  font-size: 18px;
  font-weight: bold;
  border-radius: 10px;

  transition: 0.3s;
}
/* ================= RESPONSIVE ================= */
@media (max-width: 768px) {
  table {
    width: 100%;
    font-size: 14px;
  }

  img {
    width: 80px;
  }

  .register {
    width: 95%;
  }
}