:root {
  scroll-padding: 100px;
  scroll-behavior: smooth;
}

h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 1.2em;
  margin-top: 3em;
}

p.list {
  padding-left: 1em;
  text-indent: -1em;
}

p + p {
  margin-top: 0.6em;
}

.article-container img {
  display: block;
  margin: 1.5em auto;
  width: 600px;
  max-width: 100%;
  height: auto;
  -webkit-box-shadow: 3px 10px 10px -10px #888;
          box-shadow: 3px 10px 10px -10px #888;
}

#article {
  padding: 100px 0;
}

.article-container {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
      -ms-flex-direction: row;
          flex-direction: row;
  -webkit-box-pack: start;
      -ms-flex-pack: start;
          justify-content: start;
  -webkit-box-align: stretch;
      -ms-flex-align: stretch;
          align-items: stretch;
  width: 800px;
  margin: 0 auto;
}
@media screen and (max-width: 1000px) {
  .article-container {
    width: 90%;
    -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;
  }
}

ul.article-index {
  margin: 0;
  margin-top: 3em;
  margin-bottom: 3em;
  padding: 0;
  -webkit-padding-start: 20px;
          padding-inline-start: 20px;
  list-style-image: url("../img/list-line.svg");
  color: #333;
  font-weight: 400;
  line-height: 1.2;
}
ul.article-index .sup {
  font-weight: 400;
}
ul.article-index .sup-caution {
  font-weight: 400;
  color: #e40657;
}
ul.article-index li {
  margin-top: 0;
  padding-left: 10px;
  line-height: 1.5em;
}
ul.article-index li + li {
  margin-top: 0.5em;
}