.ui-progressbar { 
    height: 1.2em; 
    text-align: left; 
    position: relative;
}

.ui-progressbar .ui-progressbar-value {
    height: 100%;
    width: 0%;
    position: absolute;
    display: none;
    border: 0 none;
}

.ui-progressbar .ui-progressbar-value-animate {
    -webkit-transition: width 1s ease-in-out;
    -moz-transition: width 1s ease-in-out;
    -o-transition: width 1s ease-in-out;
    transition: width 1s ease-in-out;
}

.ui-progressbar .ui-progressbar-label {
    text-align: center;
    height: 100%;
    width: 100%;
    position: absolute;
    display: none;
    font-weight: bold;
}