:root{
  --button-border-radius: 0px;
  --button-border-radius-ratio: 0px;
  --button-border-radius-mini: 0px;
  --button-border-radius-small: 0px;
  --button-border-radius-large: 0px;
  --inputs-border-radius: 8px;
  --inputs-border-radius-ratio: 6;
  --thumb-border-radius: 13px;
  --thumb-border-radius-relative: 0.8125;
  --course-content-border-radius: 26px;
  --course-content-border-radius-relative: 0.8125;
  --progress-border-radius: 13px;
  --progress-border-radius-ratio: 2.5;
}