html {
  scroll-behavior: smooth;
}

a {
  color: currentColor;
  text-decoration: underline;
}

hr {
  border: 0;
  border-top: 1px solid #e6e6e6;
}

img {
  max-width: 600px;
  display: block;
  margin: 12px 0;
}

.container > *:not(:first-child) {
  margin-top: 50px;
}

iframe {
  display: block;
}

body > iframe:first-of-type {
  margin: 20px auto;
}

/* p:not(header > p), */
main p,
li {
  max-width: 800px;
  line-height: 1.5;
}

body {
  font-family: Arial, sans-serif;
  scroll-behavior: smooth;
  margin: 0;
  padding: 0;
}

header {
  background-color: #333;
  color: white;
  text-align: center;
  padding: 10px;
}

.container {
  margin: 20px auto;
  max-width: 1200px;
  padding: 20px;
}

#model {
  margin: 10px auto;
}

footer {
  text-align: center;
  margin: 20px auto;
  padding: 20px;
}