/**
 * 编辑区与只读页：块级公式独占一行（配合 span.math-tex.math-tex-display）
 */
span.math-tex.math-tex-display {
  display: block !important;
  width: 100% !important;
  max-width: 100%;
  text-align: center !important;
  margin: 0.75em 0 !important;
  clear: both;
  box-sizing: border-box;
}

span.math-tex.math-tex-display iframe {
  display: block !important;
  margin-left: auto !important;
  margin-right: auto !important;
}

/* MathJax 只读排版后的块级容器 */
.math-tex-display mjx-container[display='true'],
.math-tex-display .MathJax_Display {
  margin: 0.75em auto !important;
  text-align: center !important;
}