body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: radial-gradient(circle, #fff, #cce7ff);
  text-align: center;
  padding: 20px;
}

header {
  background-color: #c62828;
  color: white;
  padding: 30px;
  border-radius: 10px;
}

.tree-container {
  margin: 50px auto;
  position: relative;
  height: 300px;
}

.tree {
  position: relative;
  width: 100px;
  margin: 0 auto;
  animation: dance 2s infinite ease-in-out;
}

.star {
  font-size: 30px;
  color: gold;
  position: absolute;
  top: -30px;
  left: 35px;
}

.branch {
  width: 0;
  height: 0;
  border-left: 50px solid transparent;
  border-right: 50px solid transparent;
  margin: 10px auto;
}

.branch1 {
  border-bottom: 30px solid green;
}

.branch2 {
  border-bottom: 30px solid #228B22;
}

.branch3 {
  border-bottom: 30px solid #006400;
}

.trunk {
  width: 20px;
  height: 30px;
  background-color: #8B4513;
  margin: 10px auto;
  border-radius: 5px;
}
@keyframes dance {
  0% { transform: rotate(0deg); }
  25% { transform: rotate(5deg); }
  50% { transform: rotate(-5deg); }
  75% { transform: rotate(5deg); }
  100% { transform: rotate(0deg); }
}
footer {
  background-color: #c62828;
  color: white;
  padding: 20px;
  border-radius: 10px;
  margin-top: 40px;
}