* {
  /* margin: 0; */
  /* padding: 0; */
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
  scroll-behavior: smooth;
}

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
  padding-bottom: 100px;
}

h1,
img {
  margin-bottom: 20px;
}

h3:not(:first-of-type) {
  padding-top: 30px;
  font-weight: 900;
}

h4 {
  text-decoration: underline;
}

/* TODO: less margin? */
h5 {
  padding: 4px;
  background-color: #ddd;
}

p {
  /* margin: 0; */
}

li {
  margin-bottom: 10px;
}

table,
table th,
table tr,
table td {
  border: 1px solid;
  border-collapse: collapse;
  padding: 8px 12px;
}

.half-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

p img {
  margin-bottom: 0;
  margin-right: 10px;
}

.back {
  display: block;
  max-width: max-content;
  padding: 10px;
  background-color: black;
  color: white;
  font-weight: bold;
  text-decoration: none;
  margin-bottom: 50px;
}

.top-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: 10px;
  background-color: black;
  color: white;
  font-weight: bold;
  text-decoration: none;
}

.box a {
  display: block;
  margin-bottom: 20px;
  font-weight: bold;
  font-size: 20px;
}