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countdown2
/
index.html

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>倒计时</title>

    <style>
        @import url("https://fonts.googleapis.com/css?family=Lato:400,700|Montserrat:900");

        html {
            display: grid;
            min-height: 100%;
        }

        body {
            display: grid;
            background: #183059;
        }

        .container {
            position: relative;
            margin: auto;
            overflow: hidden;
            width: 650px;
            height: 300px;
        }

        h1 {
            font-family: "Lato", sans-serif;
            text-align: center;
            margin-top: 2em;
            font-size: 1em;
            text-transform: uppercase;
            letter-spacing: 5px;
            color: #F6F4F3;
        }

        #timer {
            color: #F6F4F3;
            text-align: center;
            text-transform: uppercase;
            font-family: "幼圆", sans-serif;
            font-size: .7em;
            letter-spacing: 5px;
        }

        .computerText {
            font-family: "幼圆", sans-serif;
            text-align: center;
            margin-top: 14px;
            margin-bottom: 14px;
            font-size: 36px;
            text-transform: uppercase;
            letter-spacing: 5px;
            color: #F6F4F3;
        }

        .computerText span {
            font-family: '幼圆', 'Arial Narrow', Arial, sans-serif;
            font-size: 68px;
            color: #d0021b;
        }

        .days, .hours, .minutes, .seconds {
            display: inline-block;
            padding: 20px;
            width: 100px;
            border-radius: 5px;
        }

        .days {
            background: #EF2F3C;
        }

        .hours {
            background: #F6F4F3;
            color: #183059;
        }

        .minutes {
            background: #276FBF;
        }

        .seconds {
            background: #F0A202;
        }

        .numbers {
            font-family: "Montserrat", sans-serif;
            color: #183059;
            font-size: 5em;
        }

        footer {
            position: absolute;
            bottom: 0;
            right: 0;
            text-transform: uppercase;
            padding: 10px;
            font-family: "Lato", sans-serif;
            font-size: 0.7em;
        }

        footer p {
            letter-spacing: 3px;
            color: #EF2F3C;
        }

        footer a {
            color: #F6F4F3;
            text-decoration: none;
        }

        footer a:hover {
            color: #276FBF;
        }
    </style>
</head>
<body>

<div class="container">
    <div class="computerText"><span>冲刺倒计时</span></div>
    <div id="timer"></div>
</div>


<script>
    const fourthOfJuly = new Date("10 01, 2020 09:00:00").getTime();

    // countdown
    let timer = setInterval(function () {

        // get today's date
        const today = new Date().getTime();

        // get the difference
        const diff = fourthOfJuly - today;

        // math
        let days = Math.floor(diff / (1000 * 60 * 60 * 24));
        let hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
        let minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));
        let seconds = Math.floor((diff % (1000 * 60)) / 1000);

        // display
        document.getElementById("timer").innerHTML =
            "<div class=\"days\"> \
          <div class=\"numbers\">" + days + "</div>days</div> \
<div class=\"hours\"> \
  <div class=\"numbers\">" + hours + "</div>hours</div> \
<div class=\"minutes\"> \
  <div class=\"numbers\">" + minutes + "</div>minutes</div> \
<div class=\"seconds\"> \
  <div class=\"numbers\">" + seconds + "</div>seconds</div> \
</div>";

    }, 1000);
</script>


</body>
</html>