Generated by SassMeister.com.

SassMeister-input-HTML.html

<div class="container">
  <div id="burst-12">
    <p class="offer">39€</p>
  </div>
</div>

SassMeister-input.scss

// ----
// Sass (v3.4.12)
// Compass (v1.0.3)
// Toolkit (v2.7.0)
// ----

@import "toolkit";
.container {
  position: relative;
  margin: 1rem;
}
.offer {
  position: relative;
  @include vertical-center(25%);
  transform: rotate(-10deg);
  z-index: 1;
  color: black;
  font-size: 2rem;
}
#burst-12 { 
  background: gold; 
  width: 80px; 
  height: 80px; 
  position: relative; 
  text-align: center; 
}
#burst-12:before, #burst-12:after { 
  content: ""; 
  position: absolute; 
  top: 0; 
  left: 0; 
  height: 80px; 
  width: 80px; 
  background: gold; 
} 
#burst-12:before { 
  -webkit-transform: rotate(30deg); 
  -moz-transform: rotate(30deg);
  -ms-transform: rotate(30deg); 
  -o-transform: rotate(30deg);
} 
#burst-12:after { 
  -webkit-transform: rotate(60deg);
  -moz-transform: rotate(60deg); 
  -ms-transform: rotate(60deg); 
  -o-transform: rotate(60deg); 
  } 

SassMeister-output.css

.container {
  position: relative;
  margin: 1rem;
}

.offer {
  position: relative;
  top: 25%;
  position: relative;
  -webkit-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  transform: translateY(-50%);
  transform: rotate(-10deg);
  z-index: 1;
  color: black;
  font-size: 2rem;
}

#burst-12 {
  background: gold;
  width: 80px;
  height: 80px;
  position: relative;
  text-align: center;
}

#burst-12:before, #burst-12:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 80px;
  width: 80px;
  background: gold;
}

#burst-12:before {
  -webkit-transform: rotate(30deg);
  -moz-transform: rotate(30deg);
  -ms-transform: rotate(30deg);
  -o-transform: rotate(30deg);
}

#burst-12:after {
  -webkit-transform: rotate(60deg);
  -moz-transform: rotate(60deg);
  -ms-transform: rotate(60deg);
  -o-transform: rotate(60deg);
}

SassMeister-rendered.html

<div class="container">
  <div id="burst-12">
    <p class="offer">39€</p>
  </div>
</div>