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<header>
  <nav>
    <ul>
      <li><a href="#">Weird dolls</a></li>
      <li><a href="#">Undead pets</a></li>
      <li><a href="#">Clowns</a></li>
      <li><a href="#">Pale little girls</a></li>
    </ul>
  </nav>

  <h1>Creepy Children</h1>
  <p class="tagline">Hover over header for blood</p>
</header>
            
          
!
            
              header {
  /* Striped background */
  background: #2a1135;
  background-image:
    linear-gradient(90deg, transparent 50%, #190b20 50%);
  background-size: 52px;
  box-shadow: inset 0 0 100px #000;

  text-align: center;
  padding: 2em 2em 3em;
  position: relative;

  &::before,
  &::after {
    content: '';
    display: block;
    width: 100%;
    position: absolute;
    left: 0;
  }

  &::before {
    /* Red gradients for blood */
    background:
      linear-gradient(red 50%, transparent 60%),
      radial-gradient(#d40000 50%, transparent 70%),
      radial-gradient(red 30%, transparent 40%),
      radial-gradient(#d40000 10%, transparent 20%),
      radial-gradient(red 10%, transparent 15%);
    background-size: 100% 100%, 500px 500px, 200px 200px, 103px 273px, 77px 800px;
    background-position: 0 0, -97% -78%, 71% 0%, 7% 23%, 5% 49%;

    /* Background blend for bleed effect */
    mix-blend-mode: multiply;

    /* Mouse ignore blood */
    pointer-events: none;

    /* Hide before hover transition */
    opacity: 0;
    transform: translateY(-100%);

    /* Mouseout effect */
    transition: opacity 3s linear, transform 1s 3s linear;

    height: 100%;
    top: 0;
  }

  /* Hover transition */
  &:hover::before {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 1s 0s, transform 5s 0s linear;
  }

  /* Header bottom edge */
  &::after {
    background-image:
      radial-gradient(#07050a 40%, transparent 41%),
      radial-gradient(#07050a 40%, transparent 41%);
    background-size: 104px 104px;
    background-position: 0 0, 52px 0;

    height: 104px;
    bottom: -52px;
    z-index: -1;
  }
}

/* Styling */

body {
  background: #090917;
  font: 16px/1.5 'Old Standard TT', serif;
}

h1 {
  color: #fff;
  font: normal 52px 'Emilys Candy',serif;
  text-shadow: 3px 3px 0 #000;
  margin: 0.5em 0 0;
}

nav {
  /* Uncomment layer links above blood effect */
  //position: relative;

  ul,
  li {
    display: inline;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  a {
    color: #52d7ea;
    font-weight: 700;
    padding: 1em 2em;
    text-decoration: none;
    transition: all 1s;

    &:hover {
      letter-spacing: 0.2em;
    }
  }
}

.tagline {
  color: #dcbd77;
  margin: 0;
}

/* Remove effects on mobile, fix nav */
@media (max-width: 714px) {
  header::before {
    display: none;
  }

  nav {
    a {
      line-height: 2.5;
      padding: 1em;
      white-space: nowrap;

      &:hover {
        letter-spacing: 0;
      }
    }
  }

}
            
          
!
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