.iorishobo_category{
  position: relative;
  padding: 10px;
  font-size:130%;
}
.iorishobo_category::after{
  position: absolute;
  left: 0;
  width: 100%;
  height: 4px;
  content: '';
  background-image: linear-gradient(to left, #3573e7 0%, #330867 100%);  
  bottom: 0;
}