:root {
  --default-color-black: rgba(0, 0, 0, 1);
  --default-color-white: rgba(255, 255, 255, 1);
  --default-color-buttom-default: rgba(238, 238, 238, 1);
  --default-color-buttom-press: rgba(194, 194, 194, 1);
  --default-color-buttom-selected: rgba(219, 219, 219, 1);
  --default-screen-size-width: 390px;
  --default-screen-size-height: 750px;
  --default-button-corner: 8px;
}