.loading-main{
    width: 50px;
    margin: 40vh auto;
}

.loading,
.loading > div {
    position: relative;
    box-sizing: border-box;
}

.loading {
    display: block;
    font-size: 0;
    color: #409EFF;
}

.loading.la-dark {
    color: #333;
}

.loading > div {
    display: inline-block;
    float: none;
    background-color: currentColor;
    border: 0 solid currentColor;
}

.loading {
    width: 32px;
    height: 32px;
}

.loading > div {
    position: absolute;
    top: 50%;
    left: 50%;
    background: transparent;
    border-style: solid;
    border-width: 2px;
    border-radius: 100%;
    animation: ball-clip-rotate-multiple-rotate 1s ease-in-out infinite;
}

.loading > div:first-child {
    position: absolute;
    width: 32px;
    height: 32px;
    border-right-color: transparent;
    border-left-color: transparent;
}

.loading > div:last-child {
    width: 16px;
    height: 16px;
    border-top-color: transparent;
    border-bottom-color: transparent;
    animation-duration: 0.5s;
    animation-direction: reverse;
}

@keyframes ball-clip-rotate-multiple-rotate {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    50% {
        transform: translate(-50%, -50%) rotate(180deg);
    }

    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}