*,
*::before,
*::after {
  box-sizing: border-box;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: bottom;
}

ul {
  padding: 0;
  list-style: none;
}

a {
  text-decoration: none;
  opacity: 1;
  transition: opacity 0.3s;
}

a:hover {
  opacity: 0.5;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
}

html {
  scroll-behavior: smooth;
}

.center {
  text-align: center;
}

header,
main,
footer {
  width: min(1024px, 95%);
  margin-inline: auto;
}

nav {
  font-size: x-large;
  font-weight: bold;
}

a {
  color: currentColor;
}

iframe {
  aspect-ratio: 16/9;
  width: min(640px, 100%);
  height: auto;
}

.move {
  margin-block: 5rem;
  text-align: center;
}