css
/* style.css */
body {
  background: linear-gradient(to bottom, #ff69b4, #ff69b4 100px, #fff 100px);
  background-position: 0 0;
  background-size: cover;
  font-family: "Open Sans", Arial, sans-serif;
  font-size: 18px;
  font-weight: bold;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100vh;
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -ms-box-sizing: border-box;
  -o-box-sizing: border-box;
  -khtml-box-sizing: border-box;
  border: 4px solid black;
  box-shadow: 0 0 10px 0 #333, 0 0 20px #333, 0 0 30px #333, 0 0 40px #333, 0 0 50px #333;
  -webkit-box-shadow: 0 0 10px 0 #333, 0 0 20px #333, 0 0 30px #333, 0 0 40px #333, 0 0 50px #333;
  -moz-box-shadow: 0 0 10px 0 #333, 0 0 20px #333, 0 0 30px #333, 0 0 40px #333, 0 0 50px #333;
  box-shadow: 0 0 10px 0 #333, 0 0 20px #333, 0 0 30px #333, 0 0 40px #333, 0 0 50px #333;
}

body * {
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -ms-box-sizing: border-box;
  -o-box-sizing: border-box;
  -khtml-box-sizing: border-box;
}

h1 {
  color: #fff;
  text-align: center;
  text-transform: uppercase;
  font-size: 36px;
  letter-spacing: 2px;
  line-height: 1.2;
  margin-top: 0;
  margin-bottom: 10px;
  padding-top: 10px;
  border-top: 4px solid black;
  border-right: 4px solid black;
  border-bottom: 4px solid black;
  border-left: 4px solid black;
  box-shadow: 0 0 10px 0 #333;
  -webkit-box-shadow: 0 0 10px 0 #333;
  -moz-box-shadow: 0 0 10px 0 #333;
  box-shadow: 0 0 10px 0 #333;
  background: linear-gradient(-180deg, #fff, #333);
}

h2 {
  color: #fff;
  text-align: center;
  text-transform: uppercase;
  font-size: 24px;
  letter-spacing: 1.5px;
  line-height: 1.5;
  margin-top: 20px;
  margin-bottom: 5px;
  padding-top: 10px;
  padding-bottom: 5px;
  border-top: 2px solid #666;
  border-right: 2px solid #666;
  border-bottom: 2px solid #666;
  border-left: 2px solid #666;
  background: linear-gradient(0deg, #333, #666);
  background-size: 100% 100%;
  background-position: 0 0;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

h3 {
  color: #fff;
  text-align: center;
  text-transform: uppercase;
  font-size: 20px;
  letter-spacing: 1px;
  line-height: 1.2;
  margin-top: 0;
  margin-bottom: 10px;
  padding-top: 10px;
  padding-bottom: 10px;
  border-top: 2px solid #555;
  border-right: 2px solid #555;
  border-bottom: 2px solid #555;
  border-left: 2px solid #555;
  box-shadow: 0 0 10px 0 #333;
  -webkit-box-shadow: 0 0 10px 0 #333;
  -moz-box-shadow: 0 0 10px 0 #333;
  box-shadow: 0 0 10px 0 #333;
  background: linear-gradient(0deg, #555, #333);
}

p {
  color: #fff;
  font-size: 16px;
  line-height: 1.5;
  margin-top: 15px;
  margin-bottom: 15px;
  padding: 10px;
  text-align: center;
  background: linear-gradient(to right, #333, #666);
  border: 2px solid #444;
  border-radius: 20px;
  box-shadow: 0 0 10px 0 #333;
  -webkit-box-shadow: 0 0 10px 0 #333;
  -moz-box-shadow: 0 0 10px 0 #333;
  box-shadow: 0 0 10px 0 #333;
}

a {
  text-decoration: none;
  color: #fff;
  text-align: center;
  font-size: 16px;
  font-weight: bold;
  background: linear-gradient(180deg, #fff, #999);
  background-size: 100% 100%;
  background-position: 0 0;
  background-repeat: no-repeat;
  background-attachment: fixed;
  border: 2px solid #666;
  border-radius: 5px;
  box-shadow: 0 0 10px 0 #333;
  -webkit-box-shadow: 0 0 10px 0 #333;
  -moz-box-shadow: 0 0 10px 0 #333;
  box-shadow: 0 0 10px 0 #333;
}

a:hover {
  background: linear-gradient(180deg, #999, #666);
  background-size: 100% 100%;
  background-position: 0 0;
  background-repeat: no-repeat;
  background-attachment: fixed;
  border: 4px solid #555;
  border-radius: 5px;
  box-shadow: 0 0 10px 0 #333;
  -webkit-box-shadow: 0 0 10px 0 #333;
  -moz-box-shadow: 0 0 10px 0 #333;
  box-shadow: 0 0 10px 0 #333;
}