.loading {
    display: flex;
    width: 100%;
    height: 100px;
    margin: auto;
    justify-content: center;
    align-items: center;
    position: absolute;
    top: 50%;

}

.loading i {
    position: relative;
    width: 20px;
    height: 20px;
    margin-right: 20px;
    border-radius: 50%;
    background-color: #00A65A;

}
@-webkit-keyframes loading {

    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(0.5);
    }

    100% {
        transform: scale(0);
    }

}

.loading i:first-child {

    -webkit-animation: loading 1s linear .3s infinite;

}



.loading i:nth-child(2) {

    -webkit-animation: loading 1s linear .4s infinite;

}

.loading i:nth-child(3) {

    -webkit-animation: loading 1s linear .5s infinite;

}

.loading i:nth-child(4) {

    -webkit-animation: loading 1s linear .6s infinite;

}