* {
            padding: 0px;
            margin: 0px;
            -webkit-box-sizing: border-box;
        }
        body {
            background-color: white;
        }
        a {
            color: white;
            text-decoration: none;
        }

        #div_container { /*最外层div，用于居中兼容PC和移动*/
            width: 500px;
            margin: 0px auto;
            position: relative;
            /*background-color: #FAFAFA;*/
            font-size: 1em;
        }
        .div_pure_words { /*文字部分的最外层，用于定位*/
            position: relative;
            display: none;
        }
        .div_pure_words_bg { /*背景设置在这里*/
            background-repeat: repeat;
            background-size: 100%;
            background-attachment: fixed;
            width: 500px;
            min-height: 500px;
        }
        .div_pure_words_height {
            visibility: hidden;
            padding: 30px;
            text-align: justify;  /*为了使文字两端对齐 */
            white-space: pre-wrap; /*保留换行效果*/
            font-size: 1.1em;
            font-family: "Microsoft YaHei","Arial";
            color: white;
        }
        .div_pw_typed {
            position: absolute;
            left: 0;
            right: 0;  /*4个方向定位使div充满整个画画*/
            top: 0;
            bottom: 0;  /*4个方向定位使div充满整个画画*/
            width: 500px;
            background:rgba(255,255,255,0.8); /*半透明效果*/
            padding: 80px 80px 30px 30px;
            text-align: justify;  /*为了使文字两端对齐 */
        }
        #span_pw_typed {
            width:100%; /*为了使文字两端对齐 */
            white-space:pre-wrap; /*保留换行效果*/
            font-size: 1.1em;
            font-family: "Microsoft YaHei","Arial";
        }
        #div_start_bg{
            width: 100%; height: 100%;
            position: absolute;
            left: 0px; top: 0px;
            z-index: 44;
            background-color: #28231f;
        }
        .typed-cursor{
            color: red;
        }