* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: #FAFAF7;
}

body {
  font-family: Georgia, "Times New Roman", serif;
}

#page {
  position: relative;
  min-height: 100vh;
  max-width: 640px;
  margin: 0 auto;
}

#letter-wrap {
  cursor: pointer;
  padding: 4rem 1.75rem 4rem;
}

#letter-date {
  font-size: 14px;
  color: rgba(36, 34, 32, 0.55);
  margin-bottom: 1.75rem;
}

#letter-text {
  font-size: 19px;
  line-height: 1.8;
  color: #242220;
  white-space: pre-wrap;
}

#about-trigger {
  position: absolute;
  bottom: 20px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: rgba(36, 34, 32, 0.35);
  cursor: pointer;
}

#about-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(250, 250, 247, 0.97);
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2.5rem;
  cursor: pointer;
}

#about-close {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  font-size: 18px;
  color: rgba(36, 34, 32, 0.35);
  line-height: 1;
}

.about-content {
  color: #242220;
}

.about-lead,
.about-list,
.about-sign {
  font-size: 18px;
  line-height: 1.8;
  color: #242220;
  margin: 0 0 1.25rem;
}

.about-sign {
  margin: 0;
}

.italic {
  font-style: italic;
}

@media (max-width: 480px) {
  #letter-wrap {
    padding: 3rem 1.25rem 3.5rem;
  }
  #letter-text {
    font-size: 17px;
  }
}