.loader {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: block;
    margin: 15px auto;
    position: relative;
    color: #FFF;
    box-sizing: border-box;
    animation: animloader 2s linear infinite;
}

    .loader.__dark {
        color: #01556b;
    }

.loader-container {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader-container.hidden {
    display: none;
}

@keyframes animloader {
    0% {
        box-shadow: 14px 0 0 -2px, 38px 0 0 -2px, -14px 0 0 -2px, -38px 0 0 -2px;
    }

    25% {
        box-shadow: 14px 0 0 -2px, 38px 0 0 -2px, -14px 0 0 -2px, -38px 0 0 2px;
    }

    50% {
        box-shadow: 14px 0 0 -2px, 38px 0 0 -2px, -14px 0 0 2px, -38px 0 0 -2px;
    }

    75% {
        box-shadow: 14px 0 0 2px, 38px 0 0 -2px, -14px 0 0 -2px, -38px 0 0 -2px;
    }

    100% {
        box-shadow: 14px 0 0 -2px, 38px 0 0 2px, -14px 0 0 -2px, -38px 0 0 -2px;
    }
}