ribbon.css

<div class="parent">
    <h4 class="ribbon">Skip The Line<br> <small>not available elsewhere</small></h4>
</div>

<style>
@import url('https://fonts.googleapis.com/css?family=Rubik&display=swap');
.parent {
  overflow: hidden; 
  width: 100%; 
  height: 300px; 
  //margin: 25px auto;
  //border:1px solid grey; 
  position: relative; 
}

.ribbon {
  margin: 0;
  padding: 0;
  background:#42b1ff;
  color:white;
  padding:0.24em;
  position: absolute;
  top:0;
  right:0;
  transform: translateX(30%) translateY(0%) rotate(45deg);
  transform-origin: top left;
  text-align:center;
 font-family: 'Rubik', sans-serif;

}
.ribbon:before,
.ribbon:after {
  content: '';
  position: absolute;
  top:0;
  margin: 0 -1px; 
  width: 100%;
  height: 100%;
  background:#42b1ff;
}
.ribbon:before {
  right:100%;
}

.ribbon:after {
  left:100%;
}
</style>