.plano-fundo-loader {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background-color: rgba(0, 0, 0, .6);
}

.plano-fundo-loader #loader {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 40px;
    margin: -20px -50px;
}

.plano-fundo-loader #loader div {
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: #fff;
    border-radius: 50%;
}

.plano-fundo-loader #d1 {
    animation: loading-bubble 2s linear infinite;
}

.plano-fundo-loader #d2 {
    animation: loading-bubble 2s linear infinite -.4s;
}

.plano-fundo-loader #d3 {
    animation: loading-bubble 2s linear infinite -.8s;
}

.plano-fundo-loader #d4 {
    animation: loading-bubble 2s linear infinite -1.2s;
}

.plano-fundo-loader #d5 {
    animation: loading-bubble 2s linear infinite -1.6s;
}

@keyframes loading-bubble {
    0% {
        top: 0;
        left: 100px;
    }

    80% {
        top: 0;
        left: 0;
    }

    85% {
        top: -20px;
        left: 0;
        width: 20px;
        height: 20px;
    }

    90% {
        width: 40px;
        height: 15px;
    }

    95% {
        top: -20px;
        left: 100px;
        width: 20px;
        height: 20px;
    }

    100% {
        top: 0;
        left: 100px;
    }
}