* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  background-color: rgb(221, 235, 237);
}

.letter {
  background-color: white;
  padding: 48px;
  max-width: 800px;
  margin: 48px auto;
  border-radius: 12px;
  box-shadow: 0 0 30px 0 rgba(0, 0, 0, 0.05);
  letter-spacing: 0.15em;
  @media (max-width: 768px) {
    padding: 24px;
    font-size: 14px;
    margin: 12px;
  }
}

.right {
  text-align: right;
}

.right p:nth-child(1) {
  margin-bottom: 1rem;
}

h1 {
  font-size: 24px;
  text-align: center;
  margin: 2rem;
  @media (max-width: 768px) {
    font-size: 18px;
    margin: 4rem 0;
  }
}

.content {
  line-height: 2rem;
}

.content p:not(:nth-child(1)) {
  text-indent: 1em;
}

.center {
  text-align: center;
  margin: 2rem 0;
}
.narrow {
  max-width: 600px;
  margin: 2rem auto;
}

.narrow p span {
  display: inline-block;
  width: 180px;
  @media (max-width: 768px) {
    width: 100%;
    margin-top: 0.5rem;
    font-weight: bold;
  }
}

.narrow p:nth-last-child(2) {
  @media (max-width: 768px) {
    margin-top: -1rem;
  }
}

.narrow .right {
  margin: 2rem 0;
}