用图像作为背景隐藏文本块的效果！不透明度的线性梯度？
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我试图创建文本块，从块的顶部和底部慢慢消失。我知道我们可以使用像这样的another stackoverflow quastion！但我需要使用Image作为背景！而这一个不能帮助我。
我发现只有一件事如何创造我需要的东西但是！它是SVG文本，它不如html P或跨度或任何东西，因为将文本转换为svg与保存字体定位滚动和其他东西svg example的问题
<svg width="100%" height="100%" viewBox="0 0 401 201" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<defs>
<linearGradient id="linearGradient857">
<stop id="stop853" offset="0" style="stop-color:#000000;stop-opacity:0" />
<stop style="stop-color:#000000;stop-opacity:1" offset="0.3" id="stop863" />
<stop style="stop-color:#000000;stop-opacity:1" offset="0.7" id="stop861" />
<stop id="stop855" offset="1" style="stop-color:#000000;stop-opacity:0;" />
</linearGradient>
<linearGradient gradientUnits="userSpaceOnUse" y2="0" x2="0" y1="201" x1="0" id="linearGradient859" xlink:href="#linearGradient857" />
</defs>
<g>
<image xlink:href="https://media.boingboing.net/wp-content/uploads/2018/05/cool-background1.png" x="0" y="0" height="201" width="401" />
<g transform="translate(150)">
<text id="text817" y="16.541666" x="21.166666" style="font-style:normal;font-weight:normal;font-size:10.58333302px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:url(#linearGradient859);fill-opacity:1;stroke:none;stroke-width:0.26458332" xml:space="preserve">
<tspan style="stroke-width:0.26458332;fill-opacity:1;fill:url(#linearGradient859)" y="16.541666" x="21.166666" id="tspan815">qweqwejnwe.r werw erwer ,</tspan>
<tspan id="tspan819" style="stroke-width:0.26458332;fill-opacity:1;fill:url(#linearGradient859)" y="29.770832" x="21.166666">qweqwejnwe.r werw erwer ,</tspan>
<tspan id="tspan821" style="stroke-width:0.26458332;fill-opacity:1;fill:url(#linearGradient859)" y="43" x="21.166666">qweqwejnwe.r werw erwer ,</tspan>
<tspan id="tspan823" style="stroke-width:0.26458332;fill-opacity:1;fill:url(#linearGradient859)" y="56.229164" x="21.166666">qweqwejnwe.r werw erwer ,</tspan>
<tspan id="tspan829" style="stroke-width:0.26458332;fill-opacity:1;fill:url(#linearGradient859)" y="95.916664" x="21.166666">qweqwejnwe.r werw erwer ,</tspan>
<tspan id="tspan831" style="stroke-width:0.26458332;fill-opacity:1;fill:url(#linearGradient859)" y="109.14583" x="21.166666">qweqwejnwe.r werw erwer ,</tspan>
<tspan id="tspan833" style="stroke-width:0.26458332;fill-opacity:1;fill:url(#linearGradient859)" y="122.375" x="21.166666">qweqwejnwe.r werw erwer ,</tspan>
<tspan id="tspan835" style="stroke-width:0.26458332;fill-opacity:1;fill:url(#linearGradient859)" y="135.60416" x="21.166666">qweqwejnwe.r werw erwer ,</tspan>
<tspan id="tspan837" style="stroke-width:0.26458332;fill-opacity:1;fill:url(#linearGradient859)" y="148.83333" x="21.166666">qweqwejnwe.r werw erwer ,</tspan>
<tspan id="tspan839" style="stroke-width:0.26458332;fill-opacity:1;fill:url(#linearGradient859)" y="162.0625" x="21.166666">qweqwejnwe.r werw erwer ,</tspan>
<tspan id="tspan841" style="stroke-width:0.26458332;fill-opacity:1;fill:url(#linearGradient859)" y="175.29166" x="21.166666">qweqwejnwe.r werw erwer ,</tspan>
</text>
</g>
</g>
</svg>我完全需要用svg做的，但用html
答案
你可以使用-webkit-mask-image（browser support）
#background{
background-image: url(https://media.boingboing.net/wp-content/uploads/2018/05/cool-background1.png);
text-align:center;
}
#opacity-wrapper{
background-image: url(https://media.boingboing.net/wp-content/uploads/2018/05/cool-background1.png);
text-align:center;
-webkit-mask-image:
linear-gradient(to top,
rgba(255,255,255, 0) 5%,
rgba(255,255,255, 1) 60%,
rgba(255,255,255, 0) 95%
)
}<div id="background">
<div id="opacity-wrapper">
<p>This is some text</p>
<p>This is some text</p>
<p>This is some text</p>
<p>This is some text</p>
<p>This is some text</p>
<p>This is some text</p>
<p>This is some text</p>
<p>This is some text</p>
</div>
</div>另一答案
你可以使用CSS background-clip: text。有关developer.mozilla.org的更多信息
.wrapper {
background: url('https://media.boingboing.net/wp-content/uploads/2018/05/cool-background1.png') no-repeat center center / cover;
padding: 2em;
}
.wrapper p {
background: linear-gradient(-45deg, transparent 20%, #333, transparent 80%);
-webkit-background-clip: text;
background-clip: text;
color: transparent;
}<div class="wrapper">
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