* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.65;
  color: #222;
  background: #fff;
}

main {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 60px;
}

h1, h2, h3 {
  line-height: 1.25;
  margin-top: 1.8em;
  margin-bottom: 0.7em;
}

h1 {
  font-size: 36px;
  margin-top: 0;
}

h2 {
  font-size: 28px;
}

h3 {
  font-size: 22px;
}

p {
  margin: 0 0 18px;
}

.table-wrap {
  overflow-x: auto;
  margin: 24px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 650px;
}

th, td {
  border: 1px solid #ddd;
  padding: 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #f5f5f5;
}

@media (max-width: 600px) {
  main {
    width: min(100% - 24px, 900px);
    padding-top: 24px;
  }

  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 24px;
  }

  h3 {
    font-size: 20px;
  }
}