body {
  font-family: "Sawarabi Mincho";
  margin: 0 auto;
  width: 640px;
  min-height: 480px;
}

#main{
  margin: 0 auto;
  width: 100%;
  min-height: 480px;
}

pre {
  max-width: 80rem;
  overflow: auto;
  max-height: 25rem;
  border-style: solid;
  
}
#title{
  margin-left: 0;
  font-size: 2rem;
  font-style: italic;
  font-weight: 600;
}

#description{
  margin-left: 1rem;
  font-size: 1.2rem;
}

#purpose{
  margin-left: 1.5rem;
  font-size: 1rem;
}

#overview p{
  font-weight: 400;
}