body {
  margin: 0;
  padding: 0;
  display: flex;
  height: 100vh;
  font-family: 'Crimson Pro', 'Noto Serif JP', sans-serif;
}

header {
  width: 100%;
  left: 0;
  top: 0;
  opacity: 1;
  background: rgba(255,255,255,0.8);
  color: black;
  padding: 20px;
  position: fixed;
  display: flex;
  z-index: 1000;
  min-height: var(--header-h);
  box-sizing: border-box;
}

main {
  flex: 1;
  padding: 20px;
  color: black;
  padding-top: calc(var(--header-h) + 20px);
  padding-bottom: 80px;
}

/* footer {
  opacity: 80%;
  color: black;
  padding: 20px;
  position: fixed;
  width: 95%;
  bottom: 0;
  display: flex;
  justify-content: center;
} */

footer {
  height: 0;
  padding: 0;
  margin: 0;

  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;

  overflow: hidden;
  pointer-events: none;
}