css 数据：图像不会在 Firefox 58 中显示

Question

我无法显示数据：image svg。

在我的网站上，我使用这个 css sn-p：

        #menu > .close:before, #menu > .close:after {
            -moz-transition: opacity 0.2s ease;
            -webkit-transition: opacity 0.2s ease;
            -ms-transition: opacity 0.2s ease;
            transition: opacity 0.2s ease;
            content: '';
            display: block;
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-position: center;
            background-repeat: no-repeat;
            background-size: 2em 2em;
        }

#header nav ul li a[href="#menu"]:before {
                        background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100' preserveAspectRatio='none'%3E%3Cstyle%3Eline %7B stroke-width: 8px%3B stroke: %23f2849e%3B %7D%3C/style%3E%3Cline x1='0' y1='25' x2='100' y2='25' /%3E%3Cline x1='0' y1='50' x2='100' y2='50' /%3E%3Cline x1='0' y1='75' x2='100' y2='75' /%3E%3C/svg%3E");
                        opacity: 0;
                    }

#header nav ul li a[href="#menu"]:after {
                        background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100' preserveAspectRatio='none'%3E%3Cstyle%3Eline %7B stroke-width: 8px%3B stroke: %23585858%3B %7D%3C/style%3E%3Cline x1='0' y1='25' x2='100' y2='25' /%3E%3Cline x1='0' y1='50' x2='100' y2='50' /%3E%3Cline x1='0' y1='75' x2='100' y2='75' /%3E%3C/svg%3E");
                        opacity: 1;
                    }

它在 Chrome 中正确显示，过去在 Firefox 57 中也可以正确显示。但是随着 Firefox 58 的新更新，不再显示 svg 文件。所以我查看了它，在检查 Firefox 中的布局文件时，我看到上面的行被 Base64 编码为例如

background-image: url("data:image/svg+xml;charset=utf8;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAiIGhlaWdodD0iMTAwIiB2aWV3Qm94PSIwIDAgMTAwIDEwMCIgcHJlc2VydmVBc3BlY3RSYXRpbz0ibm9uZSI+PHN0eWxlPmxpbmV7c3Ryb2tlLXdpZHRoOjhweDtzdHJva2U6IzU4NTg1OH08L3N0eWxlPjxwYXRoIGQ9Ik0wIDI1SDFlMnoiIC8+PHBhdGggZD0iTTAgNTBIMWUyeiIgLz48cGF0aCBkPSJNMCA3NUgxZTJ6IiAvPjwvc3ZnPg==");

不会显示 svg 文件。我不知道如何解决这个问题。也许有人有一个想法。谢谢。

Answer 1

您的 base64 数据似乎不正确。下面的代码对我有用 (Pen)

您还缺少content 属性。请注意它，因为它是 :before 和 :after pesudo 元素的强制属性。

.b:before {
  content: "";
  height: 100px;
  width: 100px;
  display: block;
  background-image: url("data:image/svg+xml;base64,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");
}