.shing{
  position:relative;
  overflow: hidden;
}

.shing:after{
  content:"";
  width:30%;
  height:300%;
  background: linear-gradient(to right,rgba(0,0,0,0),rgba(255,255,255,0.3),rgba(255,255,255,0.5),rgba(255,255,255,0.3),rgba(0,0,0,0));
  position:absolute;
  left:-100%;
  top:-100%;
  -webkit-transform:rotate(45deg);
  transform:rotate(45deg);
  animation: shing 5s linear infinite;
  pointer-events: none;
  z-index: 10;
}



@-webkit-keyframes shing {

  from{
    left:-100%;
  }

  8%{
    left:200%;
  }

  to{
    left:200%;
  }

}
@keyframes shing {


    from{
      left:-100%;
    }

    8%{
      left:200%;
    }

    to{
      left:200%;
    }

}


/**
 * ----------------------------------------
 * animation gradient
 * ----------------------------------------
 */
@-webkit-keyframes gradient_anim {
  0% {
    background-position: 400% 50%
  }

  100%{
    background-position: 0% 50%
  }

}

@keyframes gradient_anim {
  0% {
    background-position: 400% 50%
  }

  100%{
    background-position: 0% 50%
  }
}



/**
 * ----------------------------------------
 * animation fade-out
 * ----------------------------------------
 */
@-webkit-keyframes fade-out {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@keyframes fade-out {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}