@keyframes progress-bar-stripes {
    from {
        background-position: $progress-height 0;
    }
    to {
        background-position: 0 0;
    }
}

.progress {
    display: flex;
    height: $progress-height;
    overflow: hidden; // force rounded corners by cropping it
    font-size: $progress-font-size;
    background-color: $progress-bg;
    @include border-radius($progress-border-radius);
    @include box-shadow($progress-box-shadow);
}

.progress-bar {
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: $progress-bar-color;
    text-align: center;
    white-space: nowrap;
    background-color: $progress-bar-bg;
    @include transition($progress-bar-transition);
}

.progress-bar-striped {
    @include gradient-striped();
    background-size: $progress-height $progress-height;
}

.progress-bar-animated {
    animation: progress-bar-stripes $progress-bar-animation-timing;
}