* {
  box-sizing: border-box;
}

body {
  max-width: 1000px;
  margin: 40px auto;
  padding: 0 20px;

  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;

  color: #111;
  background: #fff;
}

h1 {
  font-family: "Times New Roman", Times, serif;
  font-size: 42px;
  margin-bottom: 5px;
}

h2 {
  font-family: "Times New Roman", Times, serif;
}

a {
  color: #0000ee;
}

a:visited {
  color: #551a8b;
}

header {
  margin-bottom: 30px;
}

.disclaimer {
  margin-top: 25px;
  padding: 15px;

  border: 1px solid #888;
  background: #f2f2f2;

  font-size: 14px;
}

.toc {
  border: 2px solid #111;
  padding: 20px;
  margin: 30px 0 50px;
}

.toc h2 {
  margin-top: 0;
}

.toc li {
  margin-bottom: 8px;
}

.entry {
  border-top: 3px solid #111;
  padding: 35px 0 50px;
}

.entry-date {
  font-size: 14px;
  color: #555;
}

.sources {
  margin: 20px 0;
}

.sources a {
  margin-right: 12px;
}

.images {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;

  margin-top: 20px;
}

.images img {
  display: block;
  width: 100%;
  height: auto;

  border: 1px solid #999;
}

.back-top {
  display: inline-block;
  margin-top: 25px;
  font-size: 14px;
}

@media (max-width: 700px) {
  .images {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 34px;
  }
}