html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: "Nunito", "Noto Sans TC", sans-serif;
  user-select: none;
}

main {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  height: 100%;
}

del {
  text-decoration-thickness: 0.2em;
}

h1,
h2 {
  margin: 0.2rem 0;
}

ruby rt {
  font-size: 0.5em;
  letter-spacing: -0.05rem;
}

a {
  color: black;
  text-decoration: none;
}

footer {
  margin-top: 20px;
  font-size: 0.9em;
  color: #999;
}

.logo {
  max-width: 60vw;
  width: 400px;
  height: auto;
  margin-bottom: 20px;
  position: relative;
}

.logo::after {
  background-image: url('./paint.png');
  background-size: contain;
  background-repeat: no-repeat;
  content: '';
  display: block;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;
}

.logo img {
  width: 100%;
  height: auto;
  pointer-events: none;
}