.highlight-container, .highlight {
  position: relative;
}

.highlight-container {
  display: inline-block;
}
.highlight-container:before {
  content: " ";
  display: block;
  height: 90%;
  width: 100%;
  margin-left: -3px;
  margin-right: -3px;
  position: absolute;
  background: #ffd500;
  transform: rotate(2deg);
  top: -1px;
  left: -1px;
  border-radius: 20% 25% 20% 24%;
  padding: 7px 0.1px 3px 7px;
}