.app-loading {
    display: flex;
    width: 100%;
    height: 100%;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background: #f0f2f5;
}

.app-loading .app-loading-wrap {
    position: absolute;
    top: 50%;
    left: 50%;
    display: flex;
    -webkit-transform: translate3d(-50%, -50%, 0);
    transform: translate3d(-50%, -50%, 0);
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.app-loading .app-loading-title {
    margin-bottom: 30px;
    font-size: 20px;
    font-weight: bold;
    text-align: center;
}

.app-loading .app-loading-logo {
    width: 100px;
    margin: 0 auto 15px auto;
}

.app-loading .app-loading-item {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 60px;
    vertical-align: middle;
    border-radius: 50%;
}

.app-loading .app-loading-outter {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    animation: loader-outter 1s cubic-bezier(0.42, 0.61, 0.58, 0.41) infinite;
    --b-color: #2d8cf0;
}

.app-loading .app-loading-inner {
    width: 40px;
    height: 40px;
    position: absolute;
    top: calc(50% - 20px);
    left: calc(50% - 20px);
    animation: loader-inner 1s cubic-bezier(0.42, 0.61, 0.58, 0.41) infinite;
    --b-color: #87bdff;
}
.app-loading .app-loading-outter::before,
.app-loading .app-loading-inner::before {
    content: "";
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    border-style: solid;
    border-width: 3px;
    border-color: var(--b-color);
    border-radius: 50%;
}

.app-loading .app-loading-outter::before {
    border-top: 0;
    border-left-color: transparent;
}

.app-loading .app-loading-inner::before {
    border-left: 0;
    border-top-color: transparent;
}

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

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

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

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

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

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

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

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