<h1 contenteditable>Hello! You can Type here!</h1>

* {margin: 0; padding: 0;}

html, body {height: 100%;}

body {
  background: #B1E3E2;
  box-shadow: inset 0 0 100px 20px #80D0CF;
  text-align: center;
}

h1 {
  display: inline-block;
  font-size: 14px;
  line-height: 28px;
  color: #8699A0;
  text-shadow: 0 0 1px #758890;
  margin: 120px 0;
  font-family: arial, verdana;
  outline: none;
  padding: 14px 30px;
  position: relative;
  text-transform: uppercase;

  box-shadow: 
    0 0 30px 0 rgba(0, 0, 0, 0.1), 
    0 36px 0 -18px #B1E3E2;
}


h1:before {
  content: '';
  position: absolute;
  top: 18px;
  left: -15%;
  z-index: -1;
  width: 130%;

  height: 0;
  border: 28px solid rgba(0, 0, 0, 0);
  border-left: 28px solid #B1E3E2;
  border-right: 28px solid #B1E3E2;

}


h1:after {
  content: '';
  width: 100%;
  height: 0;
  position: absolute;
  top: 100%; left: 0;
  z-index: -1;

  border-top: 18px solid #99acb2;
  border-left: 18px solid transparent;
  border-right: 18px solid transparent;
}

h1, h1:before {
  
  background-image: 
    
    linear-gradient(
      transparent 8%, 
      rgba(0, 0, 0, 0.1) 8%, 
      rgba(0, 0, 0, 0.1) 14%, 
      transparent 14%, 
      transparent 86%, 
      rgba(0, 0, 0, 0.1) 86%, 
      rgba(0, 0, 0, 0.1) 92%, 
      transparent 92%
    ), 
    
    linear-gradient(
      rgba(255, 255, 255, 0.75), 
      rgba(255, 255, 255, 0) 
    ), 
    
    linear-gradient(
      45deg, 
      transparent 40%, 
      rgba(0, 0, 0, 0.1) 40%, 
      rgba(0, 0, 0, 0.1) 60%, 
      transparent 60%
    ), 
    
    linear-gradient(white, white); 
  background-size: 
    cover, 
    cover, 
    4px 4px, 
    cover; 
}

h1, h1:before, h1:after {
  box-sizing: border-box;

  background-origin: border-box;
}