body {
    background-color: #fff;
}

.loading_outer {
    width: 100%;
    height: 100%;
    display: table;
    position: absolute;
    top: 0;
    left: 0;
    margin: 0;
    padding: 0;
    text-align: center;
}

.loading_inner {
    display: table-cell;
    vertical-align: middle;
}

    .loading_inner .logo {
        margin: 0;
        padding: 0;
        width: 150px;
    }

    .loading_inner span {
        font-family: '微软正黑體';
        font-size: 120%;
        line-height: 2;
        color: #000;
    }

.circle {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-left: -175px;
    margin-top: -175px;
    width: 350px;
    height: 350px;
    stroke: #ff0000;
    -webkit-animation: spin 2s infinite linear;
    -moz-animation: spin 2s infinite linear;
    -o-animation: spin 2s infinite linear;
    animation: spin 2s infinite linear;
}



@-webkit-keyframes spin {
    0% {
        -webkit-transform: rotate(0deg);
    }

    100% {
        -webkit-transform: rotate(360deg);
    }
}

@-moz-keyframes spin {
    0% {
        -moz-transform: rotate(0deg);
    }

    100% {
        -moz-transform: rotate(360deg);
    }
}

@-o-keyframes spin {
    0% {
        -o-transform: rotate(0deg);
    }

    100% {
        -o-transform: rotate(360deg);
    }
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@media (max-width: 768px) {
    .circle {
        margin-left: -150px;
        margin-top: -150px;
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 400px) {
    .loading_inner span {
        font-size: 100%;
    }

    .circle {
        margin-left: -140px;
        margin-top: -140px;
        width: 280px;
        height: 280px;
    }
}