css
body {
  background: linear-gradient(to bottom, rgb(255, 0, 0), rgb(0, 0, 255));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  background-image: linear-gradient(to bottom, rgb(255, 0, 0), rgb(0, 0, 255));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
}

body::before {
  content: '';
  background: linear-gradient(to bottom, rgb(255, 0, 0), rgb(0, 0, 255));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

h1 {
  font-family: 'Bloopify', cursive;
  font-size: 64px;
  font-weight: bold;
  text-transform: uppercase;
  text-align: center;
  color: rgb(255, 0, 0);
  border: 8px solid rgb(0, 0, 0);
  background: linear-gradient(to bottom, rgb(255, 0, 0), rgb(0, 0, 255));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  padding: 16px;
  margin: 16px;
  box-shadow: 0 0 0 8px rgb(0, 0, 0);
  display: inline-block;
  position: relative;
  z-index: 1;
}

h1::before {
  content: '';
  background: linear-gradient(to bottom, rgb(255, 0, 0), rgb(0, 0, 255));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  border: 8px solid rgb(0, 0, 0);
  box-shadow: 0 0 0 8px rgb(0, 0, 0);
  display: block;
  margin: 16px;
  padding: 16px;
  background: linear-gradient(to bottom, rgb(255, 0, 0), rgb(0, 0, 255));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
}

h1 a {
  text-decoration: none;
  color: rgb(255, 0, 0);
  text-shadow: 0 0 8px rgb(0, 0, 0);
  background: linear-gradient(to bottom, rgb(255, 0, 0), rgb(0, 0, 255));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  padding: 8px 16px;
  border: 1px solid rgb(0, 0, 0);
  border-radius: 4px;
  display: inline-block;
  transition: background 0s ease-in-out;
  transition: background 0s ease-in-out;
}

h1 a:hover {
  background: linear-gradient(to bottom, rgb(0, 0, 0), rgb(0, 0, 255));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  text-shadow: 0 0 16px rgb(0, 0, 0);
  border: 2px solid rgb(0, 0, 0);
  border-radius: 0;
}

body a {
  background: linear-gradient(to bottom, rgb(0, 0, 0), rgb(255, 0, 0));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  text-decoration: none;
  color: rgb(0, 0, 0);
  text-shadow: 0 0 8px rgb(255, 0, 0);
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  transition: background 0s ease-in-out;
  transition: background 0s ease-in-out;
  display: inline-block;
  margin: 16px 0;
  font-family: 'Bloopify', cursive;
  font-size: 24px;
  font-weight: bold;
  text-align: center;
  background: linear-gradient(to bottom, rgb(0, 0, 0), rgb(255, 0, 0));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  box-shadow: 0 0 0 8px rgb(0, 0, 0);
  position: relative;
  z-index: 1;
}

body a:hover {
  background: linear-gradient(to bottom, rgb(0, 0, 0), rgb(255, 0, 0));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  text-decoration: underline;
  text-shadow: 0 0 16px rgb(0, 0, 0);
  border: 2px solid rgb(0, 0, 0);
  border-radius: 0;
}

p {
  background: linear-gradient(to bottom, rgb(0, 0, 0), rgb(255, 0, 0));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  font-family: 'Bloopify', cursive;
  font-size: 24px;
  font-weight: normal;
  line-height: 1.5;
  color: rgb(255, 0, 0);
  text-align: center;
  padding: 16px;
  margin: 16px;
  border: 1px solid rgb(0, 0, 0);
  border-radius: 4px;
  background: linear-gradient(to bottom, rgb(0, 0, 0), rgb(255, 0, 0));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  box-shadow: 0 0 0 8px rgb(0, 0, 0);
  display: block;
  position: relative;
  z-index: 1;
}

p a {
  background: linear-gradient(to bottom, rgb(0, 0, 0), rgb(255, 0, 0));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  text-decoration: none;
  color: rgb(0, 0, 0);
  text-shadow: 0 0 8px rgb(255, 0, 0);
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  transition: background 0s ease-in-out;
  transition: background 0s ease-in-out;
  display: inline-block;
  margin: 16px 0;
  font-family: 'Bloopify', cursive;
  font-size: 24px;
  font-weight: bold;
  text-align: center;
  background: linear-gradient(to bottom, rgb(0, 0, 0), rgb(255, 0, 0));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  box-shadow: 0 0 0 8px rgb(0, 0, 0);
  position: relative;
  z-index: 1;
}

p a:hover {
  background: linear-gradient(to bottom, rgb(0, 0, 0), rgb(255, 0, 0));
  background-attachment: fixed;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
  background-clip: no-clip;
  -webkit-background-clip: no-clip;
  text-decoration: underline;
  text-shadow: 0 0 16px rgb(0, 0, 0);
  border: 2px solid rgb(0, 0, 0);
  border-radius: 0;
}