div.sk-three-bounce.satoriEnhancementsSpinner {
  margin: 0 0 0 .2em;
  display: inline-block;
  width: 40px;

  & > div {
    width: 8px;
    height: 8px;
    background-color: rgba(0, 0, 0, .75);
  }
}

/* Block of numbers */
.hljs-ln td.hljs-ln-numbers {
  -webkit-touch-callout: none;
  -moz-user-select: none;
  user-select: none;

  vertical-align: top;
  padding-right: 0.75em;
}

div.sk-three-bounce.satoriEnhancementsSpinner {
  margin: 0 0 0 .2em;
  display: inline-block;
  width: 40px;

  & > div {
    width: 8px;
    height: 8px;
    background-color: rgba(0, 0, 0, .75);
  }
}

/* Block of numbers */
.hljs-ln td.hljs-ln-numbers {
  -webkit-touch-callout: none;
  -moz-user-select: none;
  user-select: none;

  vertical-align: top;
  padding-right: 0.75em;
  opacity: 0.5;
}

Add opacity: 0.5 to line numbers
Add opacity: 0.5 to line numbers
