: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: 8px;
  --inputs-border-radius-ratio: 6;
  --thumb-border-radius: 9px;
  --thumb-border-radius-relative: 0.5625;
  --course-content-border-radius: 19px;
  --course-content-border-radius-relative: 0.59375;
  --progress-border-radius: 9px;
  --progress-border-radius-ratio: 3.6;
}