:root {
  --primary-color: #88ba14;
  /* --primary-color: #7fc241 */
}

body {
  line-height: 1.4em;
  padding: 2em;
  background: #fff;
  font-family: Verdana, Arial, sans-serif;
  font-size: 12px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

h1 {
  color: #999;
  border-bottom: 1px solid #ddd;
  line-height: 2em;
  font-size: 1.3em;
  font-weight: bold;
}

header img {
  display: block;
  margin: auto;
}

header nav {
  display: flex;
  border-top: 1px solid #88ba14;
  border-bottom: 1px solid #88ba14;
  padding: 1em 0 1em 0;
  margin-top: 1em;
}

header nav div {
  display: flex;
}

header nav div ul {
  display: inline;
  padding: 0;
}

header nav div ul li {
  display: inline;
  border: 1px solid #999;
  width: 100px;
  padding: 0.8em;
  background: #88ba14;
  font-weight: bold;
}

header nav div ul li a {
  text-decoration: none;
  color: #eee;
}

footer {
  text-align: center;
  border-top: 1px solid #88ba14;
  padding-top: 1em;
  color: #ccc;
}

table {
  width: 100%;
  border-collapse: collapse;
}

table tr {
  border-bottom: 1px solid #88ba14;
  border-top: 1px solid #88ba14;
}

table th {
  vertical-align: top;
  padding: 0.5em;
  font-weight: bold;
  color: #88ba14;
}

table td {
  vertical-align: top;
  padding: 0.5em;
}