* {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 1rem;
  color: inherit;
  font: inherit;
  text-decoration: none;
}

body {
  margin-left: auto;
  margin-right: auto;
  padding: 3rem 1.5rem;
  max-width: 650px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

strong {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

em {
  font-style: italic;
}

p {
  margin: 0 0 1rem 0;
}

main {
  line-height: 1.75em;
}

a {
  color: #3f83f8;
}

ol,
ul {
  margin: 0 0 1rem 1.5rem;
}

li {
  margin: 0.5rem 0;
}

h1 {
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 2rem;
}

h2 {
  font-weight: 900;
}

main {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

footer {
  font-size: 15px;
}

body>footer {
  text-align: center;
  font-size: 14px;
  margin: 3rem 0;
}

article footer {
  margin-top: 2rem;
  background: #F8F8F8;
  color: #666;
  padding: 2rem;
  border-radius: 0.5rem;
  font-size: 14px;
}

article footer a {
  border: none;
  color: inherit;
}

nav span {
  padding: 0 0.5rem;
}

hr {
  width: 6rem;
  height: 1px;
  background: #bbb;
  margin: 1.5rem auto;
}

figure {
  margin: 0 0 1rem 0;
  text-align: center;
}

figcaption {
  color: #666;
}

img {
  max-width: 100%;
}

.check-list {
  list-style-type: "\25A1";
}

.check-list > li {
  padding-left: 0.5rem;
}

.check-list-item--done {
  list-style-type: "\25A3";
}