JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
       <div class="ribbon-wrapper-gray"><div class="ribbon-gray">SALE</div></div>
    <div class="ribbon-wrapper-green"><div class="ribbon-green">New New!</div></div>
</div>

CSS

.wrapper {
  margin: 50px auto;
  width: 280px;
  height: 370px;
  background: #fff;
  -webkit-box-shadow: 0px 0px 8px rgba(0,0,0,0.3);
  -moz-box-shadow:    0px 0px 8px rgba(0,0,0,0.3);
  box-shadow:         0px 0px 8px rgba(0,0,0,0.3);
  position: relative;
  z-index: 90;
}

.ribbon-wrapper-gray,
.ribbon-wrapper-green {
  width: 85px;
  height: 88px;
  overflow: hidden;
  position: absolute;
}

.ribbon-wrapper-gray {
  top: -3px;
  right: -3px;
}

.ribbon-wrapper-green {
  top: 0px;
  left: 0px;
  outline: 1px solid red;
}


.ribbon-gray {
  font: bold 15px Sans-Serif;
  color: #A00;
  text-align: center;
  text-shadow: rgba(255,255,255,0.5) 1px 1px 0px;
  -webkit-transform: rotate(45deg);
  -moz-transform:    rotate(45deg);
  -ms-transform:     rotate(45deg);
  -o-transform:      rotate(45deg);
  position: relative;
  padding: 7px 0;
  left: -5px;
  top: 15px;
  width: 120px;
  background-color: #aaa;

  background-image: -webkit-gradient(linear, 0 0, 100% 100%, from(#FFFFFF), to(#AAAAAA));
  background-image: -webkit-linear-gradient(top left, #FFFFFF 0%, #AAAAAA 100%);
  background-image: -moz-linear-gradient(top left, #FFFFFF 0%, #AAAAAA 100%);
  background-image: -o-linear-gradient(top left, #FFFFFF 0%, #AAAAAA 100%);
  background-image: linear-gradient(top left, #FFFFFF 0%, #AAAAAA 100%);
  

  -webkit-box-shadow: 0px 0px 3px rgba(0,0,0,0.3);
  -moz-box-shadow:    0px 0px 3px rgba(0,0,0,0.3);
  box-shadow:         0px 0px 3px rgba(0,0,0,0.3);
}

.ribbon-green {
  font: bold 15px Sans-Serif;
  color: #A00;
  text-align: center;
  text-shadow: rgba(255,255,255,0.5) 1px 1px 0px;
  -webkit-transform: rotate(-45deg);
  -moz-transform:    rotate(-45deg);
  -ms-transform:     rotate(-45deg);
  -o-transform:      rotate(-45deg);
  position: relative;
left: -50%
        ;
    top:0px;
    padding: 7px 0;
  width: 150px
        ;
  background-color: #aaa;

  background-image: -webkit-gradient(linear, 0 0, 100% 100%, from(#FFFFFF), to(#0a0));
  background-image:...