body {
  margin: 0;
  background: #f6f8f5;
  color: #101820;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

main {
  width: min(860px, calc(100% - 32px));
  margin: 48px auto;
  padding: 28px;
  background: #ffffff;
  border: 1px solid #dfe8dd;
  border-radius: 8px;
}

h1,
h2 {
  line-height: 1.2;
}

a {
  color: #087a5d;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.button {
  display: inline-block;
  margin-top: 12px;
  padding: 10px 14px;
  color: #ffffff;
  background: #087a5d;
  border-radius: 8px;
  text-decoration: none;
}

ul {
  padding-left: 22px;
}

@media (max-width: 640px) {
  main {
    width: calc(100% - 24px);
    margin: 16px auto;
    padding: 18px;
  }

  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  .button {
    display: block;
    text-align: center;
  }
}