* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  height: 100%;
  background-color: #ddd;
  background-image: linear-gradient(#ccc, #eee);
  background-attachment: fixed;
  color: #333;
  font-family: "ヒラギノ角ゴシック", "Hiragino Sans", "メイリオ", "Meiryo", sans-serif;
}

#container {
  margin: 0 auto;
  width: 100%;
  max-width: 700px;
  background-color: #fff;
  padding: 1.5rem;
}

header, main, footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
}

header {
  padding: 1.5rem 0;
  margin-bottom: 1rem;
  border-top: 1px #ccc solid;
  border-bottom: 1px #ccc solid;
}

.logo {
  margin-bottom: 1rem;
}

.logo img {
  width: 100px;
  height: 100px;
}

h1, h2, h3 {
  text-shadow: 0 0 2px rgba(0, 0, 0, 0.05);
}

h1 {
  margin-bottom: .5rem;
  font-size: 1.875rem;
  text-align: center;
}

h2 {
  margin: 1.5rem 0 1rem 0;
  font-size: 1.5rem;
}

h3 {
  font-size: 1.125rem;
  color: #555;
}

.card {
  width: 100%;
  border: 1px #ccc solid;
  margin-bottom: 1rem;
}

.card h3 {
  background-color: #eee;
  border-bottom: 1px #ccc solid;
  padding: 1rem;
  margin-bottom: 1rem;
  text-align: center;
}

.card p {
  margin: 0 1rem 1rem 1rem;
}

table {
  width: 100%;
  border: 1px #ccc solid;
  border-collapse: collapse;
  margin-bottom: 1rem;
}

tr {
  border-bottom: 1px #ccc solid;
}

tr:nth-child(even) {
  background-color: #eee;
}

th, td {
  padding: 1rem;
}

th {
  width: 30%;
  text-align: left;
}

.links {
  width: 100%;
  list-style-type: none;
  display: grid;
  grid-template-columns: 50% 50%;
}

.links li {
  margin-bottom: 1rem;
}

.links a {
  display: block;
  padding: .75rem;
  background-color: #eee;
  border: 1px #ccc solid;
  border-radius: .5rem;
  color: #333;
  text-decoration: none;
  text-align: center;
  font-weight: bold;
  transition: all .2s ease-in-out;
}

.links li:nth-child(odd) a {
  margin-right: 0.5rem;
}

.links li:nth-child(even) a {
  margin-left: 0.5rem;
}

.links a:hover {
  background-color: #ddd;
  transform: scale(1.02);
}

footer {
  border-top: 1px #ccc solid;
  border-bottom: 1px #ccc solid;
  margin-top: 1.5rem;
  padding: 1.5rem 0;
}

footer small {
  font-size: 1rem;
}

@media (max-width: 576px) {
  h1 span {
    display: block;
  }

  th, td {
    display: block;
    text-align: center;
  }

  th {
    width: 100%;
    padding-bottom: 0;
  }

  td {
    padding-top: .5rem;
  }
}