.meter {
    height: 5px;
    position: relative;
    background: #f3efe6;
    overflow: hidden;
}

    .meter span {
        display: block;
        height: 100%;
    }

.progress {
    background-color: cornflowerblue;
    animation: progressBar 3s ease-in-out;
    animation-fill-mode: both;
}
@keyframes progressBar {
    0% {
        width: 0;
    }

    100% {
        width: 100%;
    }
}