/*  波浪动画  */
#banner_wave_1 {
    width: auto;
    height: 65px;
    _filter: alpha(opacity=80);
    position: absolute;
    bottom: 0;
    width: 400%;
    left: -236px;
    z-index: 4;
    opacity: 1;
    transiton-property: opacity,bottom;
    transition-duration: .4s,.4s;
    animation-name: move2;
    animation-duration: 240s;
    animation-fill-mode: backwards;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}
#banner_wave_2 {
    width: auto;
    height: 80px;
    _filter: alpha(opacity=80);
    position: absolute;
    bottom: 0;
    width: 400%;
    left: 0;
    z-index: 3;
    opacity: 1;
    transiton-property: opacity,bottom;
    transition-duration: .4s,.4s;
    animation-name: move2;
    animation-duration: 160s;
    animation-fill-mode: backwards;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}
 
@keyframes move1 {
  100%{
    background-position: 100% 0;
  }
}
 
@keyframes move2 {
  100%{
    background-position: -100% 0;
  }
}
/*  波浪动画 END  */