:root{
  --button-border-radius: 7px;
  --button-border-radius-ratio: 6.9;
  --button-border-radius-mini: 4px;
  --button-border-radius-small: 5px;
  --button-border-radius-large: 9px;
  --inputs-border-radius: 7px;
  --inputs-border-radius-ratio: 6.9;
  --thumb-border-radius: 7px;
  --thumb-border-radius-relative: 0.4375;
  --course-content-border-radius: 7px;
  --course-content-border-radius-relative: 0.21875;
  --progress-border-radius: 7px;
  --progress-border-radius-ratio: 4.6;
}