#container {
            position: relative;
            width: 1150px;
            /*height: 400px;*/
            overflow: hidden;
			margin:0px auto;
        }
        #list {
            position: absolute;
            z-index: 3;
            width: 4600px;
            height: 400px;
        }
        #list img {
            float: left;
            width: 1150px;
            height: 400px;
        }
        #buttons {
            position: absolute;
            left: 250px;
            bottom: 20px;
            z-index:2;
            height: 10px;
            width: 100px;
        }
        #buttons span {
            float: left;
            margin-right: 5px;
            width: 10px;
            height: 10px;
            border: 1px solid #fff;
            border-radius: 50%;
            background: #333;
            cursor: pointer;
        }
        #buttons .on {
            background: orangered;
        }
        .arrow {
            position: absolute;
            top: 180px;
            z-index: 4;
            display: none;
            width: 40px;
            height: 40px;
            font-size: 36px;
            font-weight: bold;
            line-height: 39px;
            text-align: center;
            color: #fff;
            background-color: RGBA(0, 0, 0, .3);
            cursor: pointer;
        }
		.arrow a{text-decoration:none;}
        .arrow:hover {
            background-color: RGBA(0, 0, 0, .7);text-decoration:none;
        }
        #container:hover .arrow {
            display: block;
        }
        #prev {
            left: 20px;
        }
        #next {
            right: 20px;
        }