:root {
  font-family:
    Arial,
    Helvetica,
    'Hiragino Kaku Gothic ProN',
    'Yu Gothic',
    Meiryo,
    sans-serif;
  color: #333;
}

/* Default typography for non-Japanese pages */
html {
  font-size: 100%;
}

/* Japanese pages: 13px base and JP-friendly font stack */
html:lang(ja),
html[lang^='ja-'] {
  font-size: 100%;
}

html:lang(ja) body,
html[lang^='ja-'] body {
  font-family:
    Arial,
    Verdana,
    'Lucida Grande',
    'ＭＳ Ｐゴシック',
    'ヒラギノ角ゴ Pro W3',
    sans-serif;
}

/* html {
  font-size: 16px;
} */

body {
  margin: 0;
  background: #ffffff;
  display: flex;
  flex-direction: column;
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
}

body > main {
  flex: 1 0 auto;
}

body > * {
  width: 100%;
}

* {
  box-sizing: border-box;
}

img {
  display: block;
}

button,
input {
  font: inherit;
}