body {
  font-family: Arial, sans-serif;
  background-color: #f0f0f0;
  color: #333;
  margin: 0;
  padding: 20px; /* Added padding to body */
  box-sizing: border-box; /* Ensures padding doesn't affect width */
}

#container {
  max-width: 800px; /* Adjusted container width */
  margin: auto;
  background-color: #fff;
  border: 1px solid #ccc;
  padding: 20px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  text-align: center;
  border-radius: 8px;
  overflow: auto; /* Added overflow for scrolling */
}

h1, h2, h3 {
  color: #4CAF50;
}

#tree {
  width: 100%;
  max-width: 500px;
  height: 300px;
  border: 1px solid #ccc;
  margin: 20px auto;
  position: relative;
}

.node {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: lightblue;
  border: 1px solid #ccc;
  position: absolute;
  text-align: center;
  line-height: 30px;
  font-size: 16px;
}

.highlighted {
  background-color: yellow;
}

.input-area {
  margin-top: 20px;
}

.input-area input {
  padding: 8px;
  margin-right: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 14px;
  width: 100px;
  box-sizing: border-box;
}

.input-area button {
  padding: 8px 16px;
  background-color: #4CAF50;
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 4px;
  font-size: 14px;
}

.input-area button:hover {
  background-color: #45a049;
}

.error {
  color: red;
  font-size: 14px;
  margin-top: 10px;
  display: block;
}

/* Binary Search Tree Information Section */
#bst-info {
  width: 100%;
  max-width: 700px;
  margin: 20px auto;
  padding: 20px;
  border: 1px solid #ccc;
  background-color: #fff;
  box-shadow: 0 0 8px rgba(0,0,0,0.1);
  border-radius: 8px;
  text-align: left;
  line-height: 1.6;
  font-size: 14px;
  overflow: auto; /* Added overflow for scrolling */
}

#bst-info h3 {
  color: #4CAF50;
  margin-bottom: 10px;
}

#bst-info p {
  margin-bottom: 15px;
}

#bst-info ol {
  margin-top: 10px;
}

#bst-info li {
  margin-bottom: 5px;
}

.tree-image {
  width: 100%;
  max-width: 400px;
  margin: 10px auto;
  display: block;
  border: 1px solid #ccc;
  border-radius: 8px;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}