.Pimg{
    width: 480px;
    height: 291.2px;
}

.slider_container {
    margin: 30px auto;
    width: 520px;
    height: 364px;
    position: relative;
    border: 20px solid;
    border-color: #fff;
    border-bottom-width: 100px;
    background-color: #f5f5f5;
    box-shadow: #666 0 0 5px;
    }
    
    .slider_container div {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    filter: alpha(opacity=0);
    -webkit-animation: round 250s linear infinite;
    animation: round 250s linear infinite;
    }

    @-webkit-keyframes round {
        0.4% {
        opacity: 1;
        filter: alpha(opacity=100);
        /* 0 - 1秒 淡入*/
        }
        2% {
        opacity: 1;
        filter: alpha(opacity=100);
        /* 1- 5秒靜止*/
        }
        2.4% {
        opacity: 0;
        filter: alpha(opacity=0);
        /* 5-6秒淡出*/
        }
        }
        @keyframes round {
        0.4% {
        opacity: 1;
        filter: alpha(opacity=100);
        /* 0 - 1秒 淡入*/
        }
        2% {
        opacity: 1;
        filter: alpha(opacity=100);
        /* 1- 5秒靜止*/
        }
        2.4% {
        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;
            }

            .slider_container div:nth-child(6) {
                -webkit-animation-delay: 25s;
                animation-delay: 25s;
                }
            
            .slider_container div:nth-child(7) {
            -webkit-animation-delay: 30s;
            animation-delay: 30s;
            }

            .slider_container div:nth-child(8) {
                -webkit-animation-delay: 35s;
                animation-delay: 35s;
            }

            .slider_container div:nth-child(9) {
                -webkit-animation-delay: 40s;
                animation-delay: 40s;
            }

            .slider_container div:nth-child(10) {
                -webkit-animation-delay: 45s;
                animation-delay: 45s;
            }

            .slider_container div:nth-child(11) {
                -webkit-animation-delay: 50s;
                animation-delay: 50s;
            }

            .slider_container div:nth-child(12) {
                -webkit-animation-delay: 55s;
                animation-delay: 55s;
            }

            .slider_container div:nth-child(13) {
                -webkit-animation-delay: 60s;
                animation-delay: 60s;
            }

            .slider_container div:nth-child(14) {
                -webkit-animation-delay: 65s;
                animation-delay: 65s;
            }

            .slider_container div:nth-child(15) {
                -webkit-animation-delay: 70s;
                animation-delay: 70s;
            }

            .slider_container div:nth-child(16) {
                -webkit-animation-delay: 75s;
                animation-delay: 75s;
            }

            .slider_container div:nth-child(17) {
                -webkit-animation-delay: 80s;
                animation-delay: 80s;
            }

            .slider_container div:nth-child(18) {
                -webkit-animation-delay: 85s;
                animation-delay: 85s;
            }

            .slider_container div:nth-child(19) {
                -webkit-animation-delay: 90s;
                animation-delay: 90s;
            }

            .slider_container div:nth-child(20) {
                -webkit-animation-delay: 95s;
                animation-delay: 95s;
            }

            .slider_container div:nth-child(21) {
                -webkit-animation-delay: 100s;
                animation-delay: 100s;
            }

            .slider_container div:nth-child(22) {
                -webkit-animation-delay: 105s;
                animation-delay: 105s;
            }

            .slider_container div:nth-child(23) {
                -webkit-animation-delay: 110s;
                animation-delay: 110s;
            }

            .slider_container div:nth-child(24) {
                -webkit-animation-delay: 115s;
                animation-delay: 115s;
            }

            .slider_container div:nth-child(25) {
                -webkit-animation-delay: 120s;
                animation-delay: 120s;
            }

            .slider_container div:nth-child(26) {
                -webkit-animation-delay: 125s;
                animation-delay: 125s;
            }

            .slider_container div:nth-child(27) {
                -webkit-animation-delay: 130s;
                animation-delay: 130s;
            }

            .slider_container div:nth-child(28) {
                -webkit-animation-delay: 135s;
                animation-delay: 135s;
            }

            .slider_container div:nth-child(29) {
                -webkit-animation-delay: 140s;
                animation-delay: 140s;
            }

            .slider_container div:nth-child(30) {
                -webkit-animation-delay: 145s;
                animation-delay: 145s;
            }

            .slider_container div:nth-child(31) {
                -webkit-animation-delay: 150s;
                animation-delay: 150s;
            }

            .slider_container div:nth-child(32) {
                -webkit-animation-delay: 155s;
                animation-delay: 155s;
            }

            .slider_container div:nth-child(33) {
                -webkit-animation-delay: 160s;
                animation-delay: 160s;
            }

            .slider_container div:nth-child(34) {
                -webkit-animation-delay: 165s;
                animation-delay: 165s;
            }

            .slider_container div:nth-child(35) {
                -webkit-animation-delay: 170s;
                animation-delay: 170s;
            }

            .slider_container div:nth-child(36) {
                -webkit-animation-delay: 175s;
                animation-delay: 175s;
            }

            .slider_container div:nth-child(37) {
                -webkit-animation-delay: 180s;
                animation-delay: 180s;
            }

            .slider_container div:nth-child(38) {
                -webkit-animation-delay: 185s;
                animation-delay: 185s;
            }

            .slider_container div:nth-child(39) {
                -webkit-animation-delay: 190s;
                animation-delay: 190s;
            }

            .slider_container div:nth-child(40) {
                -webkit-animation-delay: 195s;
                animation-delay: 195s;
            }

            .slider_container div:nth-child(41) {
                -webkit-animation-delay: 200s;
                animation-delay: 200s;
            }

            .slider_container div:nth-child(42) {
                -webkit-animation-delay: 205s;
                animation-delay: 205s;
            }

            .slider_container div:nth-child(43) {
                -webkit-animation-delay: 210s;
                animation-delay: 210s;
            }

            .slider_container div:nth-child(44) {
                -webkit-animation-delay: 215s;
                animation-delay: 215s;
            }

            .slider_container div:nth-child(45) {
                -webkit-animation-delay: 220s;
                animation-delay: 220s;
            }

            .slider_container div:nth-child(46) {
                -webkit-animation-delay: 225s;
                animation-delay: 225s;
            }

            .slider_container div:nth-child(47) {
                -webkit-animation-delay: 230s;
                animation-delay: 230s;
            }

            .slider_container div:nth-child(48) {
                -webkit-animation-delay: 235s;
                animation-delay: 235s;
            }

            .slider_container div:nth-child(49) {
                -webkit-animation-delay: 240s;
                animation-delay: 240s;
            }

            .slider_container div:nth-child(50) {
                -webkit-animation-delay: 245s;
                animation-delay: 245s;
            }