Goston-hr-snippets.css

/* Horizontal line (<hr> tag) color in source view and reading view */

.theme-dark .markdown-source-view hr,
.theme-dark .markdown-rendered hr {
  border: solid 0.5px #555 !important;
}

.theme-light .markdown-source-view hr,
.theme-light .markdown-rendered hr {
  border: solid 0.5px #ccc !important;
}