:root{
  --button-border-radius: 20px;
  --button-border-radius-ratio: 2.4;
  --button-border-radius-mini: 10px;
  --button-border-radius-small: 15px;
  --button-border-radius-large: 27px;
  --inputs-border-radius: 20px;
  --inputs-border-radius-ratio: 2.4;
  --thumb-border-radius: 15px;
  --thumb-border-radius-relative: 0.9375;
  --course-content-border-radius: 20px;
  --course-content-border-radius-relative: 0.625;
  --progress-border-radius: 16px;
  --progress-border-radius-ratio: 2;
}