body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f9f9f9;
}

.container {
  display: flex;
  padding: 20px;
  gap: 20px;
}

.editor, .preview {
  flex: 1;
  background-color: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

textarea {
  width: 100%;
  height: calc(100vh - 200px);
  padding: 10px;
  font-family: monospace;
  font-size: 16px;
  border: 1px solid #ddd;
  border-radius: 4px;
  resize: none;
  box-sizing: border-box;
  outline: 2px solid #add8e6; /* 淡蓝色轮廓 */
}

#preview-output {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background-color: #fafafa;
  height: calc(100vh - 200px);
  box-sizing: border-box;
  overflow-y: auto;
}

/* 代码块样式 */
pre {
  padding: 10px;
  border-radius: 4px;
  overflow-x: auto;
  background-color: #2d2d2d; /* 背景颜色 */
  position: relative;
  outline: 2px solid #add8e6; /* 淡蓝色轮廓 */
}

code {
  font-family: monospace;
  font-size: 14px;
}

/* 行号样式 */
.hljs-ln-numbers {
  text-align: right;
  color: #999;
  margin-right: 10px;
  padding-right: 5px;
  border-right: 1px solid #555;
}