#progressBar {
    width: 75%;
    border: solid 1px #333;
    position: relative;
    text-align: center;
    font-weight: bold;
    padding: 1px;
}

    #progressBar .value {
        width: 0;
        height: 35px;
        background: #2bc37c;
    }

    #progressBar strong {
        position: absolute;
        top: 2px;
        line-height: 35px;
    }