<style>

    #progressBar{

        width: 80%;

        height: 50px;

        position: relative;

        margin: 50px 0 0 100px;

    }

    #progressBar div{

        width: 100%;

        height: 10px;

        position: absolute;

        top:50%;

        left: 0;

        margin-top:-20px;

        background: #ccc;

    }

    #progressBar div span{

        position: absolute;

        display: inline-block;

        background: green;

        height: 10px;

        width: 100%;