body {
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

header,
footer {
  padding: 1em 2em;
  margin: 10px;
  border: 1px solid #a7a7a7;
  border-radius: 10px;
}

aside,
main {
  padding: 0.5em 2em;
  margin: 10px;
  border: 1px solid #a7a7a7;
  border-radius: 10px;
}

main h1 {
  border-bottom: 1px solid #d9d9dd;
}

main h2 {
  border-bottom: 1px solid #d9d9dd;
}

img {
  max-width: 100%;
  max-height: 1000px;
}

em {
  background: #ffeeb7 60%;
  font-style: normal;
}

strong {
  background: #ffcece 60%;
  font-style: normal;
  font-weight: bold;
}

a {
  word-break: break-all;
  overflow-wrap: break-word;
}

code {
  font-family: "Operator Mono", "Menlo", "Monaco", "Consolas", monospace;
}

pre {
  border: 1px solid #d9d9dd;
  padding: 8px;
  overflow-x: auto;
  width: auto;
}

figure {
  text-align: center;
}

figcaption {
  color: #6e6e6e;
  font-size: 0.9em;
  text-align: center;
}

hr {
  border: 1px solid #d9d9dd;
}

nav#TableOfContents {
  border: 1px solid #d9d9dd;
  margin-top: 16px;
  margin-bottom: 16px;
  max-width: 400px;
}

.footnotes {
  font-size: 0.8em;
}

.pagination li {
  list-style-type: none;
  display: inline-block;
  margin-left: 5px;
}

.hatenablogcard {
  border: 0;
  overflow: hidden;
}