css
/* styles.css */

body {
  background-image: linear-gradient(to bottom, #FF69B4, #FF69B4);
  background-size: 100% 200px;
  background-repeat: no-repeat;
  background-position: bottom;
  font-family: 'Open Sans', sans-serif;
  font-size: 18px;
  margin: 0;
  padding: 0;
  border: 4px solid #FFFFFF;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.3) inset;
  -webkit-box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.3) inset;
  box-sizing: border-box;
  height: 100vh;
}

body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 50px;
  background: linear-gradient(to bottom, #FF69B4, #FF69B4);
  border-bottom: 4px solid #FFFFFF;
  z-index: 99999;
  box-shadow: 0px 10px 10px rgba(0, 0, 0, 0.3) inset;
  -webkit-box-shadow: 0px 10px 10px rgba(0, 0, 0, 0.3) inset;
  box-sizing: border-box;
}

#content {
  padding: 20px;
  font-size: 18px;
  margin-bottom: 20px;
  border: 2px solid #333;
  border-bottom: none;
  border-radius: 0 0 20px 20px;
  box-shadow: 0px 10px 10px rgba(0, 0, 0, 0.3) inset;
  -webkit-box-shadow: 0px 10px 10px rgba(0, 0, 0, 0.3) inset;
  box-sizing: border-box;
  max-width: 800px;
  margin: 20px auto;
  background: #FFFFFF;
}

h1 {
  font-size: 32px;
  font-weight: bold;
  color: #000000;
  border-bottom: 2px solid #333;
  margin-bottom: 20px;
  padding-bottom: 20px;
  text-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  -webkit-text-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Open Sans', sans-serif;
}

h2 {
  font-size: 22px;
  font-weight: bold;
  color: #000000;
  border-bottom: 1px solid #333;
  margin-bottom: 20px;
  padding-bottom: 10px;
  text-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  -webkit-text-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Open Sans', sans-serif;
}

p, li, a {
  font-size: 18px;
  color: #000000;
  font-family: 'Open Sans', sans-serif;
  text-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  -webkit-text-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  margin: 0;
  padding: 0;
}

a {
  text-decoration: none;
  color: #FF69B4;
  transition: color 0.2s ease-out 500ms;
}

a:hover {
  color: #69B6FF;
  text-decoration: none;
}

/* styles for subpages */

#subpage {
  padding: 10px 20px;
  border: 1px solid #333;
  border-radius: 5px 5px 10px 10px;
  box-shadow: 0px 10px 10px rgba(0, 0, 0, 0.3) inset;
  -webkit-box-shadow: 0px 10px 10px rgba(0, 0, 0, 0.3) inset;
  box-sizing: border-box;
  background-color: #FFFFFF;
  position: relative;
}

.subpage-header {
  border-bottom: 4px solid #FFFFFF;
  padding: 5px 20px;
  background: linear-gradient(to bottom, #FF69B4, #FF69B4);
  color: #333;
  font-size: 18px;
}

.subpage-header a {
  color: #69B6FF;
  text-decoration: none;
  transition: color 0.2s ease-out 500ms;
}

.subpage-header a:hover {
  color: #69B6FF;
  text-decoration: none;
}

.subpage-content {
  padding: 20px;
  border: 2px solid #333;
  background: #FFFFFF;
  border-radius: 5px 5px 10px 10px;
  box-shadow: 0px 10px 10px rgba(0, 0, 0, 0.3) inset;
  -webkit-box-shadow: 0px 10px 10px rgba(0, 0, 0, 0.3) inset;
  box-sizing: border-box;
}

.subpage-content p {
  font-size: 18px;
  color: #000000;
  font-family: 'Open Sans', sans-serif;
  text-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  -webkit-text-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  margin: 0;
  padding: 0;
}