html,body{
    width: 100%;
   
    height: 100%;
    overflow-y: hidden;
}
.login-bg{
    width: 100%;
    height: 100%;
    padding:5% 0;
    background:url("../images/login_bg.jpg") no-repeat center center #368ae2 ;
    background-size: 100%;
}
.logo{
    width: 100%;
    text-align: center;

}
.left-right{width:75%; margin:5% auto}
.fbt{
	color: white;
    font-size: 26px;
/*     font-family: "΢���ź�";} */
}
.login-box{
    position: relative;
/* 	height:360px; */
    width: 334px;
    background: #ffffff;
    border-radius: 3px;
    text-align: center;
    padding-bottom: 18px; 
     margin-top:18px;
}
.login-box h4{
    font-size: 22px;
    color: #368ae3;
    margin-top: 35px;
    margin-bottom: 50px;
}
.error-tips{
    position: absolute;
    color: red;
    font-size: 16px;
    top: 80px;
    left: 40px;
}
.username-box{
    width: 250px;
    height: 36px;
    line-height: 36px;
    margin: 0 auto;
    border: 1px solid #ccc;
    border-radius: 2px;
}
.username-box input{
    width: 200px;
    color: #333333;
}
.username-box img{
    float: right;
    margin-top: 10px;
    margin-right: 15px;
}
.password-box{
    width: 250px;
    height: 36px;
    line-height: 36px;
    margin: 15px auto;
    border: 1px solid #ccc;
    border-radius: 2px;
}
.password-box input{
    width: 200px;
    color: #333333;
}
.password-box img{
    float: right;
    margin-top: 10px;
    margin-right: 15px;
}
.valid-box{
    width: 250px;
    margin: 15px auto;
}
.valid-box input{
    width: 160px;
    height: 36px;
    float: left;
    padding: 0 6px;
    line-height: 36px;
    border: 1px solid #ccc;
    border-radius: 2px;
}
.valid-box img{
    float: right;
    width: 60px;
    height: 35px;
}
.login-btn{
    cursor: pointer;
    width: 250px;
    height: 40px;
    font-size: 16px;
    color: #ffffff;
    background: #4890ea;
    border-radius: 4px;
    margin-top: 20px;
}
.versions-number{
    font-size: 12px;
    color: #999999;
    float: left;
    margin-top: 20px;
    margin-left: 42px;
}