.countdown-holder{text-align:center;height:calc(50px + 4rem)}#countdown{padding:25px 10px;font-size:2rem;opacity:0}#countdown.show{opacity:1;-webkit-transition:opacity 0.5s ease;-moz-transition:opacity 0.5s ease;-ms-transition:opacity 0.5s ease;-o-transition:opacity 0.5s ease;transition:opacity 0.5s ease}.countdown-holder span{font-weight:600;line-height:4rem}