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css實現倒數效果

王林
發布： 2020-11-10 15:51:16
轉載
4994 人瀏覽過

css實現倒數效果

一、實現效果截圖

css實現倒數效果

（學習影片推薦：css影片教學）

二、實作原理 

看到上圖效果應該很容易猜到原理，純CSS的話使用輪播。透過改變圖片的margin-top，再加上億點點動畫，億點點數位圖片，就實現了。

使用PS建立數字圖片：

css實現倒數效果

然後

css實現倒數效果

架結構

css實現倒數效果

#三、實作細節

1、純CSS輪播論壇裡有很多這裡就不細講啦！

總之就是利用輪播的效果，讓圖片由下至上的動畫實現

css實現倒數效果

#2、倒序擺放圖片，因為倒數時間是由大到小的（廢話）

<div class="countdown-container">
    <div id="countdown-container-min">
        <img  src="../jd/img/countdown/30.png" / alt="css實現倒數效果" >
        <img  src="../jd/img/countdown/29.png" / alt="css實現倒數效果" >
        <img  src="../jd/img/countdown/28.png" / alt="css實現倒數效果" >
    </div>
</div>
登入後複製

3、給圖片設定一個邊框，平移時效果更佳

假設使用float: top 圖片上下之間會出現一些間隔。但使用float: left 同時使用容器限制，使每一張圖片換行，不會出現任何間隔

.countdown-container img{
    box-sizing: border-box;
    width: 25px;
    height: 40px;
    border: gray 1px solid;
    float: left;
}
登入後複製

4、小時和分鐘的數字切換不能一股腦讓他勻速切，得在中間加上停滯，最後用0.1%的時間讓其完成切換

@keyframes min{
    0%,
    3.13%,
    3.23% {
        margin-top: 0;
    }
 
    3.23%,
    6.36%,
    6.46% {
        margin-top: -40px;
    }
登入後複製

5、時、分、秒容器的高度=圖片數量*圖片高度，動畫的總時長= （圖片數量1) * 60(h/ m/s) ，記得轉換成秒哈

使用ease-out屬性值，讓切圖時更絲滑~

#countdown-container-min{
    height: 2400px;
    animation: min 1860s ease-out infinite;
}
登入後複製

四、全部程式碼

1、HTML

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>倒计时</title>
    <link rel="stylesheet" href="./css/countdown.css">
    <style>
        html{
            background-color: black;
        }
    </style>
</head>
<body>
    <div>
        <div>
            <div id="countdown-container-hour">
                <img  src="../jd/img/countdown/00.png" alt="css實現倒數效果" >
            </div>
        </div>
        <span id="countdown-s1">:</span>
        <div>
            <div id="countdown-container-min">
                <img  src="../jd/img/countdown/30.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/29.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/28.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/27.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/26.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/25.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/24.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/23.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/22.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/21.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/20.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/19.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/18.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/17.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/16.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/15.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/14.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/13.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/12.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/11.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/10.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/09.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/08.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/07.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/06.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/05.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/04.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/03.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/02.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/01.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/00.png" / alt="css實現倒數效果" >
            </div>
        </div>
        <span id="countdown-s2">:</span>
        <div>
            <div id="countdown-container-second">
                <img  src="../jd/img/countdown/59.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/58.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/57.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/56.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/55.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/54.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/53.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/52.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/51.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/50.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/49.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/48.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/47.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/46.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/45.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/44.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/43.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/42.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/41.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/40.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/39.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/38.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/37.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/36.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/35.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/34.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/33.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/32.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/31.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/30.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/29.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/28.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/27.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/26.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/25.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/24.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/23.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/22.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/21.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/20.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/19.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/18.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/17.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/16.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/15.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/14.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/13.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/12.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/11.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/10.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/09.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/08.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/07.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/06.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/05.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/04.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/03.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/02.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/01.png" / alt="css實現倒數效果" >
                <img  src="../jd/img/countdown/00.png" / alt="css實現倒數效果" >
            </div>
        </div>
    </div>
</body>
</html>
登入後複製

2、CSS

/* 倒计时器 */
.countdown{
    position: relative;
    height: 100px;
    width: 200px;
    margin: 50px;
}
 
/* 小时、分钟、秒之间的分号 : */
#countdown-s1{
    font-size: 30px;
    color: white;
    position: absolute;
    left: 67px;
    top: -3px;
}
 
#countdown-s2{
    font-size: 30px;
    color: white;
    position: absolute;
    left: 120px;
    top: -3px;
}
 
/* 倒计时器容器 */
.countdown-container{
    width: 25px;
    height: 40px;
    overflow: hidden;
    float: left;
    margin-left: 30px;
}
 
.countdown-container img{
    box-sizing: border-box;
    float: left;
    width: 25px;
    height: 40px;
    border: gray 1px solid;
}
 
/* 分钟轮播 */
#countdown-container-min{
    height: 2400px;
    /* 31min，需播放1860s, ease-out用于图片之间慢速停顿过渡*/
    animation: min 1860s ease-out infinite;
}
 
@keyframes min{
    0%,
    3.13%,      /*  加入停滞，使切换时的速度为0.1% */
    3.23% {
        margin-top: 0;
    }
 
    3.23%,
    6.36%,
    6.46% {
        margin-top: -40px;
    }
 
    6.46%,
    9.59%,
    9.69% {
        margin-top: -80px;
    }
 
    9.69%,
    12.82%,
    12.92%  {
        margin-top: -120px;
    }
 
    12.92%,
    16.05%,
    16.15% {
        margin-top: -160px;
    }
 
    16.15%,
    19.28%,
    19.38% {
        margin-top: -200px;
    }
    
    19.38%,
    22.51%,
    22.61% {
        margin-top: -240px;
    }
    
    22.61%,
    25.74%,
    25.84% {
        margin-top: -280px;
    }
    
    25.84%,
    28.97%,
    29.07% {
        margin-top: -320px;
    }
    
    29.07%,
    32.20%,
    32.30% {
        margin-top: -360px;
    }
    
    32.30%,
    35.43%,
    35.53% {
        margin-top: -400px;
    }
    
    35.53%,
    38.66%,
    38.76% {
        margin-top: -440px;
    }
    
    38.76%,
    41.89%,
    41.99% {
        margin-top: -480px;
    }
    
    41.99%,
    45.12%,
    45.22% {
        margin-top: -520px;
    }
    
    45.22%,
    48.35%,
    48.45% {
        margin-top: -560px;
    }
    
    48.45%,
    51.58%,
    51.68% {
        margin-top: -600px;
    }
    
    51.68%,
    54.81%,
    54.91% {
        margin-top: -640px;
    }
    
    54.91%,
    58.04%,
    58.14% {
        margin-top: -680px;
    }
    
    58.14%,
    61.27%,
    61.37% {
        margin-top: -720px;
    }
    
    61.37%,
    64.50%,
    64.60% {
        margin-top: -760px;
    }
    
    64.60%,
    67.73%,
    67.83% {
        margin-top: -800px;
    }
    
    67.83%,
    70.96%,
    71.06% {
        margin-top: -840px;
    }
    
    71.06%,
    74.19%,
    74.29% {
        margin-top: -880px;
    }
    
    74.29%,
    77.42%,
    77.52% {
        margin-top: -920px;
    }
    
    77.52%,
    80.65%,
    80.75% {
        margin-top: -960px;
    }
    
    80.75%,
    83.88%,
    83.98% {
        margin-top: -1000px;
    }
    
    83.98%,
    87.11%,
    87.21% {
        margin-top: -1040px;
    }
    
    87.21%,
    90.34%,
    90.44% {
        margin-top: -1080px;
    }
    
    90.44%,
    93.57%,
    93.67% {
        margin-top: -1120px;
    }
    
    93.67%,
    96.80%,
    96.90% {
        margin-top: -1160px;
    }
    
    96.90%,
    99.90%,
    100% {
        margin-top: -1200px;
    }
}
 
/* 秒轮播 */
#countdown-container-second{
    height: 2400px;
    animation: second 60s ease-out infinite;
}
 
@keyframes second {
    0%,
    1.66% {
        margin-top: 0;
    }
 
    1.66%,
    3.32% {
        margin-top: -40px;
    }
 
    3.32%,
    4.98% {
        margin-top: -80px;
    }
 
    4.98%,
    6.64% {
        margin-top: -120px;
    }
 
    6.64%,
    8.30% {
        margin-top: -160px;
    }
 
    8.30%,
    9.96% {
        margin-top: -200px;
    }
    
    9.96%,
    11.62% {
        margin-top: -240px;
    }
    
    11.62%,
    13.28% {
        margin-top: -280px;
    }
    
    13.28%,
    14.94% {
        margin-top: -320px;
    }
    
    14.94%,
    16.60% {
        margin-top: -360px;
    }
    
    16.60%,
    18.26% {
        margin-top: -400px;
    }
    
    18.26%,
    19.92% {
        margin-top: -440px;
    }
    
    19.92%,
    21.58% {
        margin-top: -480px;
    }
    
    21.58%,
    23.24% {
        margin-top: -520px;
    }
    
    23.24%,
    24.90% {
        margin-top: -560px;
    }
    
    24.90%,
    26.56% {
        margin-top: -600px;
    }
    
    26.56%,
    28.22% {
        margin-top: -640px;
    }
    
    28.22%,
    29.88% {
        margin-top: -680px;
    }
    
    29.88%,
    31.54% {
        margin-top: -720px;
    }
    
    31.54%,
    33.2% {
        margin-top: -760px;
    }
    
    33.20%,
    34.86% {
        margin-top: -800px;
    }
    
    34.86%,
    36.52% {
        margin-top: -840px;
    }
    
    36.52%,
    38.18% {
        margin-top: -880px;
    }
    
    38.18%,
    39.84% {
        margin-top: -920px;
    }
    
    39.84%,
    41.50% {
        margin-top: -960px;
    }
    
    41.50%,
    43.16% {
        margin-top: -1000px;
    }
    
    43.16%,
    44.82% {
        margin-top: -1040px;
    }
    
    44.82%,
    46.48% {
        margin-top: -1080px;
    }
    
    46.48%,
    48.14% {
        margin-top: -1120px;
    }
    
    48.14%,
    49.80% {
        margin-top: -1160px;
    }
    
    49.80%,
    51.46% {
        margin-top: -1200px;
    }
    
    51.46%,
    53.12% {
        margin-top: -1240px;
    }
    
    53.12%,
    54.78% {
        margin-top: -1280px;
    }
    
    54.78%,
    56.44% {
        margin-top: -1320px;
    }
    
    56.44%,
    58.10% {
        margin-top: -1360px;
    }
    
    58.10%,
    59.76% {
        margin-top: -1400px;
    }
    
    59.76%,
    61.42% {
        margin-top: -1440px;
    }
 
    61.42%,
    63.08% {
        margin-top: -1480px;
    }
                
    63.08%,
    64.74% {
        margin-top: -1520px;
    }
    
    64.74%,
    66.40% {
        margin-top: -1560px;
    }
 
    66.40%,
    68.06% {
        margin-top: -1600px;
    }
                
    68.06%,
    69.72% {
        margin-top: -1640px;
    }
    
    69.72%,
    71.38% {
        margin-top: -1680px;
    }
 
    71.38%,
    73.04% {
        margin-top: -1720px;
    }
                
    73.04%,
    74.70% {
        margin-top: -1760px;
    }
    
    74.70%,
    76.36% {
        margin-top: -1800px;
    }
 
    76.36%,
    78.02% {
        margin-top: -1840px;
    }
                
    78.02%,
    79.68% {
        margin-top: -1880px;
    }
    
    79.68%,
    81.34% {
        margin-top: -1920px;
    }
 
    81.34%,
    83.00% {
        margin-top: -1960px;
    }
                
    83.00%,
    84.66% {
        margin-top: -2000px;
    }
    
    84.66%,
    86.32% {
        margin-top: -2040px;
    }
 
    86.32%,
    87.98% {
        margin-top: -2080px;
    }
                
    87.98%,
    89.64% {
        margin-top: -2120px;
    }
    
    89.64%,
    91.30% {
        margin-top: -2160px;
    }
 
    91.30%,
    92.96% {
        margin-top: -2200px;
    }
                
    92.96%,
    94.62% {
        margin-top: -2240px;
    }
    
    94.62%,
    96.28% {
        margin-top: -2280px;
    }
 
    96.28%,
    97.94% {
        margin-top: -2320px;
    }
                
    97.94%,
    100% {
        margin-top: -2360px;
    }
}
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來源：csdn.net
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