.loading {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    background: #ffffff;
}

.loading .pic {
    width: 64px;
    height: 64px;
    /* background: url(images/loading.gif); */
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto
}

.loading .pic i {
    display: block;
    float: left;
    width: 6px;
    height: 50px;
    background: #399;
    margin: 0 2px;
    transform: scaleY(0.4);
    animation: load 1.2s infinite;
}

.loading .pic i:nth-child(1) {
    animation-delay: 0.1s
}

.loading .pic i:nth-child(2) {
    animation-delay: 0.2s
}

.loading .pic i:nth-child(3) {
    animation-delay: 0.3s
}

.loading .pic i:nth-child(4) {
    animation-delay: 0.4s
}

.loading .pic i:nth-child(5) {
    animation-delay: 0.5s
}

@keyframes load {

    0%,
    40%,
    100% {
        transform: scaleY(0.4)
    }

    20% {
        transform: scaleY(1)
    }
}

.mask{
    position: absolute;
    background: white;/*白色蒙版*/
    opacity: 1;/*透明度*/
    width: 100%;
    height: 100%;
    left: 0px;
    top: 0px;
    position: fixed;
    bottom: 0px;
    z-index: 999;
}