/* GENERAL */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
}

.container {
    width: 300px;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.flex-column {
    flex-direction: column;
}

.flex-one {
    flex: 1;
}

.flex-wrap {
    flex-wrap: wrap;
}

.flex-end {
    align-items: flex-end;
}

/* CLOCK */
.units > * {
    flex: 1;
    text-align: center;
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 10px;
}

[class^=dot] {
    width: 40px;
    height: 40px;
    background: #eeeeee;
    border-radius: 50%;
    position: relative;
}

[class^=dot]::after {
    position: absolute;
    color: black;
    right: -18px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 30px;
}

.dots.active {
    background: #444;
    transition: .2s;
}
.single-digit , .dozen-digit {
    display: flex;
    flex-direction: column-reverse;
}

.binary-hours, .binary-minutes, .binary-seconds {
    flex-direction: row-reverse;
}

.binary-seconds .single-digit > .dot-1::after {
    content: '1';
}

.binary-seconds .single-digit > .dot-2::after {
    content: '2';
}

.binary-seconds .single-digit > .dot-4::after {
    content: '4';
}

.binary-seconds .single-digit > .dot-8::after {
    content: '8';
}

.digital-display, .binary-display, .units, .binary-clock {
    width: 100%;
}

.digital-display > * {
    font-size: 50px;
    text-align: center;
    flex: 1;
}