/* 全局加载遮罩 */
.ajax-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: none;
    z-index: 9999;
}

/* 遮罩内动画 */
.ajax-loading .spin {
    position: absolute;
    top: 50%;
    left: 50%;

    transform: translate(-50%, -50%);

    width: 75px;
    height: 75px;
    border: 10px solid #eee;
    border-top-color: #009688;
    border-radius: 50%;

    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%,-50%) rotate(360deg);
    }
}