.fl {
    float: left
}

.fr {
    float: right
}

.clearfix:before,
.clearfix:after {
    display: table;
    content: ""
}

.clearfix:after {
    clear: both
}


* {
    -webkit-box-sizing: border-box;
    box-sizing: border-box
}

b {
    font-weight: normal
}

html,
body {
    width: 100%;
    height: 100%;
    color: #fff
}


ul,
li,
dl,
dt,
dd {
    padding: 0;
    margin: 0;
    list-style: none
}

h1,
h2,
h3,
h4,
div {
    padding: 0;
    margin: 0;
    font-weight: normal
}

h3 {
    font-size: .5625em;
    color: #fff
}

p {
    margin: 0;
    padding: 0
}

body {
    position: relative;
    padding: 0;
    margin: 0;
    font-family: MicrosoftYaHei;
    overflow: hidden;
    
}

.root-wrap {
    height: 100%;
    position:relative;
}

#back {
    position:absolute;
    top:10px;
    left:5px;
    cursor:pointer;
    z-index: 999999;
}
.hidden {
    display:none;
}

.btn-white {
	color:#444;
	text-shadow:none;
	border:1px solid #ddd;
	background:#FFF;
	background-image:linear-gradient(bottom, rgb(250,250,250) 1%, rgb(255,255,255) 51%);
	background-image:-o-linear-gradient(bottom, rgb(250,250,250) 1%, rgb(255,255,255) 51%);
	background-image:-moz-linear-gradient(bottom, rgb(250,250,250) 1%, rgb(255,255,255) 51%);
	background-image:-webkit-linear-gradient(bottom, rgb(250,250,250) 1%, rgb(255,255,255) 51%);
	background-image:-ms-linear-gradient(bottom, rgb(250,250,250) 1%, rgb(255,255,255) 51%);
}

    /* Sizes */
    .btn-small {
      font-size:13px;
      padding:5px 20px;

      text-align: center;
      border-radius: 3px;
      text-decoration: none;
      font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
     
    }