.pure-material-progress-linear {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    border: none;
    height: 4px;
    color: #3F51B5;
    font-size: 16px;
    width: 100%;
    position: fixed;
    top: 0;
    z-index: 99999999;
}

    .pure-material-progress-linear::-webkit-progress-bar {
        background-color: transparent;
    }

    .pure-material-progress-linear::-webkit-progress-value {
        background-color: currentColor;
        transition: all 0.2s;
    }

    .pure-material-progress-linear::-moz-progress-bar {
        background-color: currentColor;
        transition: all 0.2s;
    }

    .pure-material-progress-linear::-ms-fill {
        border: none;
        background-color: currentColor;
        transition: all 0.2s;
    }

    .pure-material-progress-linear:indeterminate {
        background-size: 200% 100%;
        background-image: linear-gradient(to right, transparent 50%, currentColor 50%, currentColor 60%, transparent 60%, transparent 71.5%, currentColor 71.5%, currentColor 84%, transparent 84%);
        animation: pure-material-progress-linear 2s infinite linear;
    }

        .pure-material-progress-linear:indeterminate::-moz-progress-bar {
            background-color: transparent;
        }

        .pure-material-progress-linear:indeterminate::-ms-fill {
            animation-name: none;
        }

@keyframes pure-material-progress-linear {
    0% {
        background-size: 200% 100%;
        background-position: left -31.25% top 0%;
    }

    50% {
        background-size: 800% 100%;
        background-position: left -49% top 0%;
    }

    100% {
        background-size: 400% 100%;
        background-position: left -102% top 0%;
    }
}