css
/* Global Styles */

body {
  font-family: "Open Sans", sans-serif;
  margin: 0;
  padding: 0;
  border: 1px solid black;
}

body, .container {
  width: 100%;
  background-color: #f7dc6d;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
}

h1, h2, h3, h4, h5, h6, h7 {
  font-weight: bold;
  font-family: "Open Sans", sans-serif;
  text-align: center;
  border-bottom: 1px solid black;
  padding-bottom: 5px;
}

h1 {
  font-size: 24px;
  margin-top: 20px;
}

h2 {
  font-size: 20px;
  margin-bottom: 10px;
}

h3 {
  font-size: 18px;
  margin-bottom: 5px;
}

h4 {
  font-size: 16px;
  margin-bottom: 5px;
}

h5 {
  font-size: 14px;
}

h6 {
  font-size: 12px;
  margin-top: 10px;
}

h7 {
  font-size: 10px;
  margin-bottom: 5px;
}

p {
  font-size: 14px;
  margin: 0 0 10px 0;
  text-align: left;
  line-height: 18px;
  color: #333;
  font-family: "Open Sans", sans-serif;
}

p, .container, .header, .footer {
  box-shadow: 0px 0px 0px 0px rgba(0, 0, 0, 0.2);
  border: 1px solid #333;
  border-bottom: 1px solid black;
  border-radius: 4px;
  padding: 5px;
  background-color: #f7dc6d;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
}

a {
  text-decoration: none;
  color: #000;
  font-weight: bold;
  text-align: center;
  text-decoration: none;
  border-bottom: 1px solid black;
  border-top: 1px solid #333;
  padding: 5px 5px 5px 5px;
  background-color: #f7dc6d;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
}

a:hover {
  background-color: #f7dc6d;
  border-bottom: 2px solid black;
  border-top: 2px solid #333;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px;
  background-color: #f7dc6d;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
  border: 1px solid black;
  border-radius: 4px;
}

.header {
  padding: 10px;
  background-color: #f7dc6d;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
  border: 1px solid black;
  border-radius: 4px;
  font-family: "Open Sans", sans-serif;
}

.header h1 {
  font-size: 24px;
  margin-top: 0;
  padding: 0;
  border-bottom: 2px solid black;
  border-top: 1px solid #333;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
}

.footer {
  padding: 10px;
  background-color: #f7dc6d;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
  border: 1px solid black;
  border-radius: 4px;
  position: fixed;
  bottom: 0;
  width: 100%;
  background-color: #f7dc6d;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
}

/* Styles for specific elements */

.header h2 {
  font-size: 20px;
  margin-bottom: 5px;
  border-bottom: 1px solid black;
  padding-bottom: 5px;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
}

.header h3 {
  font-size: 18px;
  margin-bottom: 5px;
  border-bottom: 1px solid black;
  padding-bottom: 5px;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
}

.footer p {
  font-size: 14px;
  margin: 0 0 10px 0;
  text-align: left;
  line-height: 18px;
  color: #333;
  font-family: "Open Sans", sans-serif;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
}

/* Styles for subpages */

.subpage {
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
  border: 1px solid black;
  border-radius: 4px;
  margin: 10px;
  padding: 5px;
  width: 300px;
  position: absolute;
  top: 50%;
  left: 50%;
  background-color: #f7dc6d;
}

.subpage h1 {
  font-size: 20px;
  margin-top: 0;
  padding: 0;
  border-bottom: 1px solid black;
  border-top: 1px solid #333;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
}

/* Styles for links */

a.sublink {
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
  border-bottom: 1px solid black;
  border-top: 1px solid #333;
  padding: 5px 5px 5px 5px;
  text-decoration: none;
  text-align: center;
  font-weight: bold;
  color: #000;
  font-size: 16px;
}

a.sublink:hover {
  background-color: #f7dc6d;
  background-image: linear-gradient(-180deg, #f7dc6d 0, #d3d6d5 100%);
  background-size: 200px 200px;
  background-position: 0 0;
  background-repeat: repeat;
  border-bottom: 2px solid black;
  border-top: 2px solid #333;
  text-decoration: none;
  text-align: center;
  font-weight: bold;
  color: #000;
  font-size: 16px;
}