滑钟（样式测试版），HTML代码在线实时编辑、实时预览

            
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            <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Modern Slide Clock</title>
    <style>
        /* 定义 Orbitron 字体 */
        @font-face {
            font-family: 'Orbitron';
            src: url('https://fonts.googleapis.com/css2?family=Orbitron&display=swap');
            font-weight: normal;
            font-style: normal;
        }
        
        body {
            text-align: center;
            color: rgba(224, 230, 235, 0.89);
            font-family: 'Orbitron', sans-serif;
            background-image: url('../images/bg.jpg');
            background-color: #131415;
            background-position: center center;
            background-repeat: no-repeat;
            background-attachment: fixed;
            background-size: cover;
            overflow: hidden;
        }
        .column,
        .colon {
            display: inline-block;
            vertical-align: top;
            font-size: 86px;
            line-height: 86px;
        }
        .column {
            -webkit-transition: -webkit-transform 300ms;
            transition: -webkit-transform 300ms;
            transition: transform 300ms;
            transition: transform 300ms, -webkit-transform 300ms;
        }
        .colon {
            -webkit-transition: -webkit-transform 300ms;
            transition: -webkit-transform 300ms;
            transition: transform 300ms;
            transition: transform 300ms, -webkit-transform 300ms;
            -webkit-transform: translateY(calc(50vh - 43px));
            transform: translateY(calc(50vh - 43px));
        }
        .colon:after {
            content: ':';
        }
        .num {
            -webkit-transition: opacity 500ms, text-shadow 100ms;
            transition: opacity 500ms, text-shadow 100ms;
            opacity: 0.025;
        }
        .num.visible {
            opacity: 1.0;
            text-shadow: 1px 1px 0px #336699;
        }
        .num.close {
            opacity: 0.35;
        }
        .num.far {
            opacity: 0.15;
        }
        .num.distant {
            opacity: 0.1;
        }
    </style>
</head>
<body>
    <div class="column">
        <div class="num">0</div>
        <div class="num">1</div>
        <div class="num">2</div>
    </div>
    <div class="column">
        <div class="num">0</div>
        <div class="num">1</div>
        <div class="num">2</div>
        <div class="num">3</div>
        <div class="num">4</div>
        <div class="num">5</div>
        <div class="num">6</div>
        <div class="num">7</div>
        <div class="num">8</div>
        <div class="num">9</div>
    </div>
    <div class="colon"></div>
    <div class="column">
        <div class="num">0</div>
        <div class="num">1</div>
        <div class="num">2</div>
        <div class="num">3</div>
        <div class="num">4</div>
        <div class="num">5</div>
    </div>
    <div class="column">
        <div class="num">0</div>
        <div class="num">1</div>
        <div class="num">2</div>
        <div class="num">3</div>
        <div class="num">4</div>
        <div class="num">5</div>
        <div class="num">6</div>
        <div class="num">7</div>
        <div class="num">8</div>
        <div class="num">9</div>
    </div>
    <div class="colon"></div>
    <div class="column">
        <div class="num">0</div>
        <div class="num">1</div>
        <div class="num">2</div>
        <div class="num">3</div>
        <div class="num">4</div>
        <div class="num">5</div>
    </div>
    <div class="column">
        <div class="num">0</div>
        <div class="num">1</div>
        <div class="num">2</div>
        <div class="num">3</div>
        <div class="num">4</div>
        <div class="num">5</div>
        <div class="num">6</div>
        <div class="num">7</div>
        <div class="num">8</div>
        <div class="num">9</div>
    </div>
    <script src="index.js"></script>
</body>
</html>

            
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            var size = 86;
var columns = Array.from(document.getElementsByClassName('column'));
var d = void 0,
    c = void 0;
var classList = ['visible', 'close', 'far', 'far', 'distant', 'distant'];
var use24HourClock = true;

function padClock(p, n) {
    return p + ('0' + n).slice(-2);
}

function getClock() {
    d = new Date();
    return [use24HourClock ? d.getHours() : d.getHours() % 12 || 12, d.getMinutes(), d.getSeconds()].reduce(padClock, '');
}

function getClass(n, i2) {
    return classList.find(function (class_, classIndex) {
        return Math.abs(n - i2) === classIndex;
    }) || '';
}

var loop = setInterval(function () {
    c = getClock();

    columns.forEach(function (ele, i) {
        var n = +c[i];
        var offset = -n * size;
        ele.style.transform = 'translateY(calc(50vh + ' + offset + 'px - ' + size / 2 + 'px))';
        Array.from(ele.children).forEach(function (ele2, i2) {
            ele2.className = 'num ' + getClass(n, i2);
        });
    });
}, 200 + Math.E * 10);

            
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            @font-face {
    font-family: 'Orbitron';
    src: url('https://fonts.googleapis.com/css2?family=Orbitron&display=swap');
    font-weight: normal;
    font-style: normal;
}

body {
    text-align: center;
    color: rgba(224, 230, 235, 0.89);
    font-family: 'Orbitron', sans-serif; /* 使用 Orbitron 字体 */
    background-image: url('../images/bg.jpg');
    background-color: #131415;
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    overflow: hidden;
}

.column {
}
.colon {
    display: inline-block;
    vertical-align: top;
    font-size: 86px;
    line-height: 86px;
}

.column {
    -webkit-transition: -webkit-transform 300ms;
    transition: -webkit-transform 300ms;
    transition: transform 300ms;
    transition: transform 300ms, -webkit-transform 300ms;
}

.colon {
    -webkit-transition: -webkit-transform 300ms;
    transition: -webkit-transform 300ms;
    transition: transform 300ms;
    transition: transform 300ms, -webkit-transform 300ms;
    -webkit-transform: translateY(calc(50vh - 43px));
    transform: translateY(calc(50vh - 43px));
}

.colon:after {
    content: ':';
}

.num {
    -webkit-transition: opacity 500ms, text-shadow 100ms;
    transition: opacity 500ms, text-shadow 100ms;
    opacity: 0.025;
}

.num.visible {
    opacity: 1.0;
    text-shadow: 1px 1px 0px #336699;
}

.num.close {
    opacity: 0.35;
}

.num.far {
    opacity: 0.15;
}

.num.distant {
    opacity: 0.1;
}