body {
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", Meiryo, sans-serif;
  margin: 0;
  padding: 0;
}
div,
h1 {
  margin: 0;
  padding: 0;
}
a {
  color: #1558d6;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
.main {
  max-width: 800px;
  padding: 20px;
  margin: auto;
}