.slider_container {
	width: 800px;
    height: 450px;
    position: relative;
    /*border: 20px solid;
    border-color: #fff;
    border-bottom-width: 100px;
    box-shadow: #666 0 0 5px;*/
    background-color: #f5f5f5;
}
.slider_container div {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    filter: alpha(opacity=0);
    -webkit-animation: round 25s linear infinite;
            animation: round 25s linear infinite;
}
.slider_container:hover div {
    -webkit-animation-play-state: paused;
            animation-play-state: paused;
}
.slider_container div img {
	width: 800px;
    height: 450px;
}
@-webkit-keyframes round {
    4% {
        opacity: 1;
        filter: alpha(opacity=100);
        /* 0 - 1秒 淡入*/
    }
    20% {
        opacity: 1;
        filter: alpha(opacity=100);
        /* 1- 5秒靜止*/
    }
    24% {
        opacity: 0;
        filter: alpha(opacity=0);
        /* 5-6秒淡出*/
    }
}
@keyframes round {
    4% {
        opacity: 1;
        filter: alpha(opacity=100);
        /* 0 - 1秒 淡入*/
    }
    20% {
        opacity: 1;
        filter: alpha(opacity=100);
        /* 1- 5秒靜止*/
    }
    24% {
        opacity: 0;
        filter: alpha(opacity=0);
        /* 5-6秒淡出*/
    }
}
.slider_container div:nth-child(1) {
    -webkit-animation-delay: 0s;
            animation-delay: 0s;
}
.slider_container div:nth-child(2) {
    -webkit-animation-delay: 5s;
            animation-delay: 5s;
}
.slider_container div:nth-child(3) {
    -webkit-animation-delay: 10s;
            animation-delay: 10s;
}
.slider_container div:nth-child(4) {
    -webkit-animation-delay: 15s;
            animation-delay: 15s;
}
.slider_container div:nth-child(5) {
    -webkit-animation-delay: 20s;
            animation-delay: 20s;
}