body { margin: 0; }


/*sliding navigation between the slides*/
ul {
    -webkit-perspective: 1000;
    -webkit-backface-visibility: hidden;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;

    margin: 0;
    padding: 0;
    position: fixed;
    left:0;

    height:100vh;


    list-style-type: none;
    overflow: hidden;

    -webkit-perspective: 1000;
    -webkit-backface-visibility: hidden;

}

li {
    margin: 0;
    padding: 0;
    list-style-type: none;

    float: left;
    width: 100vw;
    height: 100%;
    color: #000;
    text-align: center;

}

#blackcover{ height: 100vh; width: 100vw; position: absolute; background-color: #2B2B2B; z-index: 1; color: #FFF; display: block; }
.b2{ background-color: #69428B; }
.b3{ background-color: #46537A; }
h1{ font-family: "微软雅黑"; padding-top: 30px; color:#fff }
/*end of sliding navigation between the slides*/