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How to use pure CSS to achieve animation effects on the Windows startup interface

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Release: 2018-09-04 11:33:50
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本篇文章给大家带来的内容是关于如何使用纯CSS实现Windows启动界面的动画效果 ,有一定的参考价值,有需要的朋友可以参考一下,希望对你有所帮助。

效果预览

How to use pure CSS to achieve animation effects on the Windows startup interface

源代码下载

https://github.com/comehope/front-end-daily-challenges

代码解读

定义 dom,容器中包含 2 个元素,分别代表 logo 和进度条,logo 又包含 3 段文字:

<div>
    <div>
        <p>Microsoft</p>
        <p>Windows</p>
        <p>Professional</p>
    </div>
    <div></div>
</div>
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居中显示:

body {
    margin: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: black;
}
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定义容器尺寸:

.windows-boot {
    width: 21.5em;
    height: 15em;
}
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设置段落样式:

.logo p {
    color: white;
    font-family: sans-serif;
    margin: 0;
    padding: 0;
}
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设置字号:

.logo .ms {
    font-size: 1.6em;
}

.logo .win {
    font-size: 4.2em;
}

.logo .pro {
    font-size: 3em;
}
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设置字体粗细:

.logo .ms {
    font-weight: lighter;
}

.logo .win {
    font-weight: bold;
}

.logo .pro {
    font-weight: lighter;
}
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设置行高:

.logo .ms {
    line-height: 1em;
}

.logo .win {
    line-height: 86%;
}

.logo .pro {
    line-height: 1em;
    padding-left: 0.2em;
}
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在 "Microsoft" 后面增加商标版权符号:

.logo .ms::after {
    content: '\00a9';
    font-size: 0.625em;
    vertical-align: top;
    position: relative;
    top: -0.3em;
    left: 0.2em;
}
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在 "Windows" 后面增加 "xp":

.logo .win::after {
    content: 'XP';
    font-size: 0.5em;
    vertical-align: top;
    position: relative;
    top: -0.4em;
    color: tomato;
}
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定义进度条尺寸:

.bar {
    width: 15em;
    height: 1em;
    border: 0.2em solid silver;
}
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增加 logo 和进度条的间距:

.windows-xp-loader {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
}
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设置进度条的样式:

.bar {
    border-radius: 0.7em;
    position: relative;
    padding: 0.2em;
}

.bar::before {
    content: '';
    position: absolute;
    width: 3em;
    height: 70%;
    background-color: dodgerblue;
    border-radius: 0.2em;
}
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用线性渐变设置进度条中蓝色色块的样式:

.bar::before {
    background: 
        linear-gradient(
            to right,
            transparent 30%,
            black 30%, black 35%,
            transparent 35%, transparent 65%,
            black 65%, black 70%,
            transparent 70%
        ),
        linear-gradient(
            blue 0%,
            royalblue 17%,
            deepskyblue 32%, deepskyblue 45%,
            royalblue 60%,
            blue 100%
        );
    filter: brightness(1.2);
}
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增加动画效果:

.bar::before {
    animation: run 2s linear infinite;
}

@keyframes run {
    from {
        transform: translateX(-3em);
    }

    to {
        transform: translateX(15em);
    }
}
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最后,隐藏进度条之外的内容:

.bar {
    overflow: hidden;
}
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大功告成!

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