@media (max-width: 640px) {
  .post-content .katex-display {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.25rem;
  }

  .post-content .katex-display > .katex {
    display: inline-block;
    width: max-content;
  }
}