.u-progress{background:var(--up-track,var(--u-surface));height:var(--up-h,25px);overflow:hidden;position:relative;width:100%;z-index:50}.u-progress--sticky{position:sticky;top:0}.u-progress__bar{background:var(--up-bar,var(--u-accent));height:100%;transform:scaleX(0);transform-origin:0 50%;width:100%;will-change:transform}