.reverse-spinner {
    position: relative;
    height: 100px;
    width: 100px;
    border: 4px solid transparent;
    border-top-color: #1976d2;
    border-left-color: #1976d2;
    border-radius: 50%;
    -webkit-animation: spin 1.5s linear infinite;
    animation: spin 1.5s linear infinite;
}

.reverse-spinner::before {
    position: absolute;
    top: 15px;
    left: 15px;
    right: 15px;
    bottom: 15px;
    content: "";
    border: 4px solid transparent;
    border-top-color: #03a9f4;
    border-left-color: #03a9f4;
    border-radius: 50%;
    -webkit-animation: spinBack 1s linear infinite;
    animation: spinBack 1s linear infinite;
}

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

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

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

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


@-webkit-keyframes spinBack {
    from {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }

    to {
        -webkit-transform: rotate(-720deg);
        transform: rotate(-720deg);
    }
}

@keyframes spinBack {
    from {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }

    to {
        -webkit-transform: rotate(-720deg);
        transform: rotate(-720deg);
    }
}