feat: refactor CSS to SCSS

Alexander Bilz

21.13.2022 be3218290dc63ba251bfd2fe4d4dccb2122f4bbe

 assets/css/spinner.css

@@ -3,7 +3,7 @@
  --sk-color: #333;
}

html[data-theme='dark'] {
body.theme--dark {
  --sk-color: rgb(169, 169, 179);
}