.loading_window,.alert_window, .confirm_window{
    width: 100%;
    height: 100%;
    background-color: rgba(255,255,255,0.65);
    position: absolute;
    left: 0px;
    top: 0px;
    z-index: 3;
    display: none;
}
/*动画css*/
.loading{
    width:100px;
    height: 100px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform:translateX(-50%) translateY(-50%);
}
.loading .dh{
    width: 65px;
    height: 65px;
    position: absolute;
    top: 17px;
    left: 17px;
}
.loading .dh .leaves{
    height: 0;
    width:4px;
    border-top: 16px solid #fc9f8f;
    border-left:3px solid transparent;
    border-right:3px solid transparent;
    position: absolute;
    left: 27px;
    top: 0px;
}
.loading .f2{
    transform: rotate(30deg);
}
.loading .f2 .leaves{
    border-top: 16px solid #f67560;
    border-left:3px solid transparent;
    border-right:3px solid transparent;
}
.loading .f3{
    transform: rotate(60deg);
}
.loading .f3 .leaves{
    border-top: 16px solid #f04e33;
    border-left:3px solid transparent;
    border-right:3px solid transparent;
}
.loading .f4 .leaves{
    border-top: 16px solid #dd391d;
    border-left:3px solid transparent;
    border-right:3px solid transparent;
}
.loading .f4{
    transform: rotate(90deg);
}
.loading .sc{
    width:100px;
    height: 100px;
    animation:scc 0.8s infinite linear;
    position: absolute;
    transform-origin: center;/*绕轴心*/
}
@keyframes scc{
    from{transform: rotate(0deg);}
    to{transform: rotate(360deg);}
}
/*alert*/
.alert_window .alert, .confirm_window .alert{
    width:320px;
    height: auto;
    background: #fff;
    border:1px solid #87ceeb;
    position: absolute;
    top: 50%;
    left: 50%;
    transform:translateX(-50%) translateY(-50%);
}
.alert_window .text, .confirm_window .text{
    text-align: center;
    margin:0 auto;
    margin-top: 30px;
    margin-bottom:30px;
    letter-spacing: 1px;
}
.alert_window button{
    width: 50px;
    font-size: 14px;
    text-align: center;
    background-color: #fff;
    border: 1px solid #a1a1a1;
    position: relative;
    bottom:10px;
    left: 50%;
    transform:translateX(-50%) translateY(-50%);
}
.confirm_window .btn{
    width:60px;
    height: 25px;
    line-height: 25px;
    font-size: 14px;
    text-align: center;
    background-color: #fff;
    border: 1px solid #a1a1a1;
    cursor: pointer;
}
.btngroup{
    position: absolute;
    bottom:20px;
    left: 25%;
    display: inline-block;
}
.confirm_window .confirm_btn{
    display: inline-block;
    margin-right: 2vw;
}
.confirm_window .cancel_btn{
    display: inline-block;
}