.slider_container {
  width: 400px;
  height: 20px;
  position: relative;
  border-color: #fff;
  background-color: #f5f5f5;
  box-shadow: #666 0 0 0px;
  box-sizing: content-box;
}
.slider_container div {
  width: 400px;
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  filter: alpha(opacity=0);
  -webkit-animation: round 0s linear infinite;
  animation: round 0s linear infinite;
}
@-webkit-keyframes round {
  4% {
    opacity: 0;
    filter: alpha(opacity=0);
    /* 0 - 1秒 淡入*/
  }
  20% {
    opacity: 1;
    filter: alpha(opacity=0);
    /* 1- 5秒靜止*/
  }
  24% {
    opacity: 0;
    filter: alpha(opacity=0);
    /* 5-6秒淡出*/ 
  }
}

@keyframes round {
  0% {
    opacity: 0;
    top: 100%;
  }
  
  16% {
    opacity: 1;
    top: 100%;
  }
  
  20% {
    opacity: 1;
    top: 0;
  }
  
  28% {
    opacity: 1;
    top: 0;
  }
  
  32% {
    opacity: 0;
    top: -120%;
  }
  
  100% {
    opacity: 0;
    top: -120%;
  }
}
.slider_container:hover div {
  -webkit-animation-play-state: paused; 
  animation-play-state: paused;
}
.rwd_slider_container_wrapper {
  width: 400px;
  max-width: 100%;
  height:20px;
  box-sizing: border-box;
  padding: 5px;
  margin: 0 auto;
}
.rwd_slider_container { 
  position: relative; 
  display: block;
  height: 0;
  padding: 0;
  box-sizing: border-box;
 
}
.rwd_slider_container .slider_container {
  box-shadow: none;
  margin: 0;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 20px;
  margin: 0;
  box-sizing: border-box;
  border: none;
  background-color: transparent;
}
.rwd_slider_container .slider_container div {
  width: 100%;
  height: 20px;
  line-height: 0;
}