.progress-spinner .line{
    position:absolute;
    opacity: 0.4;
    background: #428bca;
    width:150%;
    height:3px;
}

.progress-spinner .subline{
    position:absolute;
    background: #428bca;
    height:3px;
}
.progress-spinner .inc{
    animation: increase 2s infinite;
}
.progress-spinner .dec{
    animation: decrease 2s 0.5s infinite;
}

@keyframes increase {
    from { left: -5%; width: 5%; }
    to { left: 130%; width: 100%;}
}
@keyframes decrease {
    from { left: -80%; width: 80%; }
    to { left: 110%; width: 10%;}
}