.loader {
    width: 100%;
    height: 4.8px;
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    position: relative;
    overflow: hidden;
}
.loader::after {
    content: '';
    width: 0%;
    height: 4.8px;
    background-color: #FFF;
    background-image: linear-gradient(45deg, rgba(0, 0, 0, 0.25) 25%, transparent 25%, transparent 50%, rgba(0, 0, 0, 0.25) 50%, rgba(0, 0, 0, 0.25) 75%, transparent 75%, transparent);
    background-size: 15px 15px;
    position: absolute;
    top: 0;
    left: 0;
    box-sizing: border-box;
    animation: animFw 6s ease-in infinite;
}

.bg-table-success {
    background-color: #d1e7dd; /* to jest kolor tła z table-success */
}

@keyframes animFw {
    0% {
        width: 0;
    }
    100% {
        width: 100%;
    }
}