.countdown.one > span {
    color: red;
    position: relative;
    padding: 0px 10px;
    display: inline-block;
    text-align: center;
}

.countdown.two > span {
    color: red;
    position: relative;
    padding: 0px 10px;
    display: inline-block;
    text-align: center;
}

.countdown.one > span::before {
    content: ":";
    color: red;
    position: relative;
    top: 0px;
    left: -10px
}

.countdown.one > span:first-child:before {
    content: '';
}

.countdown.one span span, .countdown.two span span {
    clear: both;
    display: block;
    position: relative;
    top: -5px;
}