@charset "UTF-8";
html, body {
  margin: 0;
  padding: 0; }

body {
  background-color: white;
  font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', '游ゴシック  Medium', meiryo, sans-serif; }

header {
  padding: 0.8em;
  padding-left: 1.2em; }

header h1 {
  margin: 0;
  font-size: 1.6em; }
  header h1 a {
    text-decoration: none;
    color: #666; }

.article-list {
  padding: 1em;
  width: 100%;
  box-sizing: border-box;
  max-width: 700px; }
  .article-list h2 {
    font-size: 1.3em; }
  .article-list ul {
    list-style: none; }
  .article-list li {
    margin-top: 1.5em; }
  .article-list a {
    text-decoration: none; }

.main {
  box-sizing: border-box;
  padding: 1em;
  width: 100%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: nowrap;
      flex-wrap: nowrap;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center; }

article {
  max-width: 700px;
  width: 100%;
  font-size: 1.6rem;
  line-height: 1.5em;
  letter-spacing: .02em;
  text-align: justify; }
  article h1 {
    color: #4d7ca2;
    font-size: 1.8em;
    padding-bottom: 6px;
    border-bottom: 2px solid rgba(77, 124, 162, 0.2); }
  article h2, article h3, article h4, article h5 {
    font-size: 1.3em; }
  article h2 {
    margin-bottom: 2.5rem;
    color: #4d7ca2; }
  article a {
    text-decoration: none; }
  article p {
    margin: 0 0 2rem; }

.next-article {
  margin-top: 3em;
  margin-bottom: 2em; }
  .next-article a {
    text-decoration: none; }

.description {
  max-width: 700px;
  width: 100%;
}

footer {
  box-sizing: border-box;
  padding: 2em;
  padding-top: 3em;
  width: 100%; }
  footer h2 {
    text-align: center;
    margin-top: 3em;
    margin: 0;
    font-size: 1.4em; }
    footer h2 a {
      text-decoration: none; }

.copy-right {
  text-align: right; }
  .copy-right a {
    text-decoration: none;
    color: #999; }