@charset "UTF-8";

html {
  font-size: 100%;
  font-family: "Yu Gothic", "游ゴシック", YuGothic, "ヒラギノ角ゴ Pro W3", "メイリオ", sans-serif;
  color: #222;
  background-color: #fff;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

#fade-in {
  opacity: 0;
  transition: opacity 0.5s ease;
}

header {
  padding: 1rem;
  background-color: #f5f5f5;
  border-bottom: 1px solid #ccc;
}

h1 {
  margin: 0;
  font-size: 1.8rem;
}

.main-nav {
  list-style: none;
  display: flex;
  gap: 1rem;
  padding: 0;
}

.main-nav a {
  background: #fff;
  color: #000;
  border: 1px solid #000;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  text-decoration: none;
  transition: 0.3s;
}

.main-nav a:hover {
  background: #000;
  color: #fff;
}

main {
  flex: 1;
  padding: 1.5rem;
}

a {
  background-color: white;
  color: black;
  padding: 0.25em 0.5em;
  text-decoration: none;
}

footer {
  text-align: right;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  background-color: #000;
  color: #fff;
  position: relative;
}