css - IE中的文字过渡动画效果问题

Question

下面的代码在大多数浏览器中显示动画文本，但 IE 除外，它运行但您看不到它。我可以就如何解决这个问题提供一些指导吗？

请引用此链接查看示例> http://jsfiddle.net/pherrera/posvken7/

代码如下:

<div class="container">
    <div id="background" class="card">
        <div class="sp-container">
            <div class="sp-content">
                <div class="sp-globe"></div>
                <h3 class="frame-1">message 1</h3>
                <h3 class="frame-2">message 2</h3>
                <h3 class="frame-3">message 3</h3>
                <h3 class="frame-4">Now!</h2>
                <h3 class="frame-5">
                    <span>this</span> <span>is</span> <span>a message</span>
                </h3>
                <a class="sp-circle-link" href="#">again!</a>
            </div>
        </div>
    </div>
</div>

body, html {
    background-color: #282828;
    display: table;
    height: 100%;
    width: 100%;
}

.container {
    display: table-cell;
    vertical-align: middle;
}

.card {
    border-radius: 2px 2px 2px 2px;
    -moz-border-radius: 2px 2px 2px 2px;
    -webkit-border-radius: 2px 2px 2px 2px;
    border: 0px none;
    -webkit-box-shadow: 0px 0px 75px 0px rgba(255, 255, 255, 0.1);
    -moz-box-shadow: 0px 0px 75px 0px rgba(255, 255, 255, 0.1);
    box-shadow: 0px 0px 75px 0px rgba(255, 255, 255, 0.1);
}

#background {
    width: 600px;
    height: 500px;
    margin: 0 auto;
    background: rgba(92, 92, 92, 1);
    background: -moz-radial-gradient(center, ellipse cover, rgba(92, 92, 92, 1) 0%, rgba(59, 59, 59, 1) 100%);
    background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%, rgba(92, 92, 92, 1)), color-stop(100%, rgba(59, 59, 59, 1)));
    background: -webkit-radial-gradient(center, ellipse cover, rgba(92, 92, 92, 1) 0%, rgba(59, 59, 59, 1) 100%);
    background: -o-radial-gradient(center, ellipse cover, rgba(92, 92, 92, 1) 0%, rgba(59, 59, 59, 1) 100%);
    background: -ms-radial-gradient(center, ellipse cover, rgba(92, 92, 92, 1) 0%, rgba(59, 59, 59, 1) 100%);
    background: radial-gradient(ellipse at center, rgba(92, 92, 92, 1) 0%, rgba(59, 59, 59, 1) 100%);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#5c5c5c', endColorstr='#3b3b3b', GradientType=1);
}

a {
    text-decoration: none;
}

h1.main, p.demos {
    -webkit-animation-delay: 18s;
    -moz-animation-delay: 18s;
    -ms-animation-delay: 18s;
    animation-delay: 18s;
}

.sp-container {
    position: fixed;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 100%;
    z-index: 0;
    background: -webkit-radial-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.3) 35%, rgba(0, 0, 0, 0.7));
    background: -moz-radial-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.3) 35%, rgba(0, 0, 0, 0.7));
    background: -ms-radial-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.3) 35%, rgba(0, 0, 0, 0.7));
    background: radial-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.3) 35%, rgba(0, 0, 0, 0.7));
}

.sp-content {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0px;
    top: 0px;
    z-index: 1000;
}

.sp-container h3 {
    position: absolute;
    top: 50%;
    line-height: 100px;
    height: 90px;
    margin-top: -50px;
    font-size: 60px;
    width: 100%;
    text-align: center;
    color: transparent;
    -webkit-animation: blurFadeInOut 3s ease-in backwards;
    -moz-animation: blurFadeInOut 3s ease-in backwards;
    -ms-animation: blurFadeInOut 3s ease-in backwards;
    animation: blurFadeInOut 3s ease-in backwards;
}

.sp-container h3.frame-1 {
    -webkit-animation-delay: 0s;
    -moz-animation-delay: 0s;
    -ms-animation-delay: 0s;
    animation-delay: 0s;
}

.sp-container h3.frame-2 {
    -webkit-animation-delay: 3s;
    -moz-animation-delay: 3s;
    -ms-animation-delay: 3s;
    animation-delay: 3s;
}

.sp-container h3.frame-3 {
    -webkit-animation-delay: 6s;
    -moz-animation-delay: 6s;
    -ms-animation-delay: 6s;
    animation-delay: 6s;
}

.sp-container h3.frame-4 {
    font-size: 200px;
    -webkit-animation-delay: 9s;
    -moz-animation-delay: 9s;
    -ms-animation-delay: 9s;
    animation-delay: 9s;
}

.sp-container h3.frame-5 {
    -webkit-animation: none;
    -moz-animation: none;
    -ms-animation: none;
    animation: none;
    color: transparent;
    text-shadow: 0px 0px 1px #fff;
}

.sp-container h3.frame-5 span {
    -webkit-animation: blurFadeIn 3s ease-in 12s backwards;
    -moz-animation: blurFadeIn 1s ease-in 12s backwards;
    -ms-animation: blurFadeIn 3s ease-in 12s backwards;
    animation: blurFadeIn 3s ease-in 12s backwards;
    color: transparent;
    text-shadow: 0px 0px 1px #fff;
}

.sp-container h3.frame-5 span:nth-child(2) {
    -webkit-animation-delay: 13s;
    -moz-animation-delay: 13s;
    -ms-animation-delay: 13s;
    animation-delay: 13s;
}

.sp-container h3.frame-5 span:nth-child(3) {
    -webkit-animation-delay: 14s;
    -moz-animation-delay: 14s;
    -ms-animation-delay: 14s;
    animation-delay: 14s;
}

.sp-globe {
    position: absolute;
    width: 282px;
    height: 273px;
    left: 50%;
    top: 50%;
    margin: -137px 0 0 -141px;
    -webkit-animation: fadeInBack 3.6s linear 14s backwards;
    -moz-animation: fadeInBack 3.6s linear 14s backwards;
    -ms-animation: fadeInBack 3.6s linear 14s backwards;
    animation: fadeInBack 3.6s linear 14s backwards;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=30)";
    filter: alpha(opacity=30);
    opacity: 0.3;
    -webkit-transform: scale(5);
    -moz-transform: scale(5);
    -o-transform: scale(5);
    -ms-transform: scale(5);
    transform: scale(5);
}

.sp-circle-link {
    position: absolute;
    left: 50%;
    bottom: 100px;
    margin-left: -50px;
    text-align: center;
    line-height: 100px;
    width: 100px;
    height: 100px;
    background: #fff;
    color: #3f1616;
    font-size: 25px;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    -webkit-animation: fadeInRotate 1s linear 16s backwards;
    -moz-animation: fadeInRotate 1s linear 16s backwards;
    -ms-animation: fadeInRotate 1s linear 16s backwards;
    animation: fadeInRotate 1s linear 16s backwards;
    -webkit-transform: scale(1) rotate(0deg);
    -moz-transform: scale(1) rotate(0deg);
    -o-transform: scale(1) rotate(0deg);
    -ms-transform: scale(1) rotate(0deg);
    transform: scale(1) rotate(0deg);
}

.sp-circle-link:hover {
    background: #85373b;
    color: #fff;
}
/**/
@-webkit-keyframes blurFadeInOut {
    0% {
        opacity: 0;
        text-shadow: 0px 0px 40px #fff;
        -webkit-transform: scale(1.3);
    }

    20%, 75% {
        opacity: 1;
        text-shadow: 0px 0px 1px #fff;
        -webkit-transform: scale(1);
    }

    100% {
        opacity: 0;
        text-shadow: 0px 0px 50px #fff;
        -webkit-transform: scale(0);
    }
}

@-webkit-keyframes blurFadeIn {
    0% {
        opacity: 0;
        text-shadow: 0px 0px 40px #fff;
        -webkit-transform: scale(1.3);
    }

    50% {
        opacity: 0.5;
        text-shadow: 0px 0px 10px #fff;
        -webkit-transform: scale(1.1);
    }

    100% {
        opacity: 1;
        text-shadow: 0px 0px 1px #fff;
        -webkit-transform: scale(1);
    }
}

@-webkit-keyframes fadeInBack {
    0% {
        opacity: 0;
        -webkit-transform: scale(0);
    }

    50% {
        opacity: 0.4;
        -webkit-transform: scale(2);
    }

    100% {
        opacity: 0.2;
        -webkit-transform: scale(5);
    }
}

@-webkit-keyframes fadeInRotate {
    0% {
        opacity: 0;
        -webkit-transform: scale(0) rotate(360deg);
    }

    100% {
        opacity: 1;
        -webkit-transform: scale(1) rotate(0deg);
    }
}
/**/
@-moz-keyframes blurFadeInOut {
    0% {
        opacity: 0;
        text-shadow: 0px 0px 40px #fff;
        -moz-transform: scale(1.3);
    }

    20%, 75% {
        opacity: 1;
        text-shadow: 0px 0px 1px #fff;
        -moz-transform: scale(1);
    }

    100% {
        opacity: 0;
        text-shadow: 0px 0px 50px #fff;
        -moz-transform: scale(0);
    }
}

@-moz-keyframes blurFadeIn {
    0% {
        opacity: 0;
        text-shadow: 0px 0px 40px #fff;
        -moz-transform: scale(1.3);
    }

    100% {
        opacity: 1;
        text-shadow: 0px 0px 1px #fff;
        -moz-transform: scale(1);
    }
}

@-moz-keyframes fadeInBack {
    0% {
        opacity: 0;
        -moz-transform: scale(0);
    }

    50% {
        opacity: 0.4;
        -moz-transform: scale(2);
    }

    100% {
        opacity: 0.2;
        -moz-transform: scale(5);
    }
}

@-moz-keyframes fadeInRotate {
    0% {
        opacity: 0;
        -moz-transform: scale(0) rotate(360deg);
    }

    100% {
        opacity: 1;
        -moz-transform: scale(1) rotate(0deg);
    }
}
/**/
@keyframes blurFadeInOut {
    0% {
        opacity: 0;
        text-shadow: 0px 0px 40px #fff;
        transform: scale(1.3);
    }

    20%, 75% {
        opacity: 1;
        text-shadow: 0px 0px 1px #fff;
        transform: scale(1);
    }

    100% {
        opacity: 0;
        text-shadow: 0px 0px 50px #fff;
        transform: scale(0);
    }
}

@keyframes blurFadeIn {
    0% {
        opacity: 0;
        text-shadow: 0px 0px 40px #fff;
        transform: scale(1.3);
    }

    50% {
        opacity: 0.5;
        text-shadow: 0px 0px 10px #fff;
        transform: scale(1.1);
    }

    100% {
        opacity: 1;
        text-shadow: 0px 0px 1px #fff;
        transform: scale(1);
    }
}

@keyframes fadeInBack {
    0% {
        opacity: 0;
        transform: scale(0);
    }

    50% {
        opacity: 0.4;
        transform: scale(2);
    }

    100% {
        opacity: 0.2;
        transform: scale(5);
    }
}

@keyframes fadeInRotate {
    0% {
        opacity: 0;
        transform: scale(0) rotate(360deg);
    }

    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

Answer 1

基本上，现代版本的 IE 唯一会遇到的问题是在透明元素上渲染阴影。这是一个已知的限制，有几个怪癖；如果模糊半径是 0然后文本将可见。否则，要转换阴影，文本的颜色需要稍微不透明。

在玩了一会儿之后，我想出了一个潜在的解决方法，应该足以满足您的演示。由于文本阴影已经起作用，并且能够从偏移量定位，您可以将元素本身定位在相反的方向:

.blur {
    top: -100vh;
    position: relative;
    text-shadow: 0 100vh 1em #000;
}

为了仅显示模糊文本，我们将阴影向下推了 100vh。这会将它设置在屏幕外，因此我们还将转换阴影的元素向上 100vh，这会将模糊文本恢复到其宿主元素的原始位置。

在这种情况下，我使用了 ga veritcal offset，但您可能会发现这在某些情况下并不理想。例如，您的文档更高，模糊区域更靠下，您可能会发现横向偏移更好。在这种情况下，您可以通过隐藏横向溢出来避免不必要的滚动条:

body {
    overflow-x: hidden;
}

我编写了一个演示 fiddle 来显示结果 online here .在构建这个时，我确实注意到 Chrome 目前有一个布局问题，这在调整大小时很明显——看起来是 vm。 (大概是 vh )不与当前视口(viewport)尺寸保持同步。如果这会给您的元素带来问题，您可能需要使用其他设备。

也可以将此效果应用于延迟出现的作品。我冒昧地创建了a second fiddle证明了这种效果。其标记非常简单，类似于您已有的标记:

<h1>
    <span>Hello</span> 
    <span>World</span>
</h1>
<h2>
    <span>Additional</span>
    <span>Information</span>
    <span>Provided</span>
    <span>Eventually</span>
</h2>

CSS 完成了一些事情:

1. 在 <body> 中将文本居中(可能仅限于标题)
2. 将元素放置在屏幕外，将文本阴影放置在屏幕上
3. 动画 text-shadow以各种延迟显示嵌套的属性 <span>元素

body {
    text-align: center;
    font-family: "Segoe UI";
}

span {
    opacity: 0;
    vertical-align: middle;
    text-shadow: 100vw 0 3em #000;
    position: relative; left: -100vw;
    animation: fadein 2s ease-in-out forwards;
}

/* Controls 'Hello' and 'World' */
h1 span:nth-child(1) { animation-delay: 1s; }
h1 span:nth-child(2) { animation-delay: 2s; }

/* Controls 'Stack Overflow is Awesome */
h2 span { animation-delay: 3s; }

@keyframes fadein {
    to { 
        opacity: 1;
        text-shadow: 100vw 0 0 #000;
    }
}

最终结果是平滑的、跨浏览器的模糊效果: