/* root setting */
:root {
  --font-size: 16px;
  --font-family: -apple-system, BlinkMacSystemFont, Roboto, "Segoe UI",
    "Helvetica Neue", HelveticaNeue, YuGothic, "Yu Gothic Medium", "Yu Gothic",
    Verdana, Meiryo, sans-serif;
  --font-color: #333;
  --font-color-reverse: #fff;
  --background-color: #fff;
  --background-color-2: #f8f3ec;
  --background-color-3: #feeeee;
  --background-color-4: #fff7ed;
  --border-color: #ccc;
  --base-color: #fff;
  --assort-color: #ee1c23;
  --accent-color: #f08200;
  --box-sizing: border-box;
  --transition: 0.3s ease;
  --margin: 0;
  --padding: 0;
  --border: 0;
  --vertical-align: baseline;
  --position: relative;
}