Question

请考虑以下示例： codepen

.infobox {
  width: 110mm;
  height: 65mm;
  background-image: url(https://i.pinimg.com/564x/86/70/f2/8670f2ab34bf4082bf3cef004aae0826.jpg);
  background-size: cover;
  position: relative;
}

.text {
  position: absolute;
  bottom: 0;
  text-align: center;
  color: white;
}

<div class="infobox">
  <span class="text">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi vel quam in enim pulvinar fringilla. Etiam molestie convallis pharetra. Sed et tortor tortor. Vestibulum ligula ex, rhoncus semper metus ut, hendrerit porttitor risus. Quisque at porta magna. Phasellus vel vulputate diam. Maecenas sem est, aliquet nec odio euismod, posuere luctus nisl. Vestibulum posuere iaculis massa, sed cursus dui pellentesque sed.</span>
</div>

我生成许多图像，有时浅色文字可以，但是在这种情况下不是。

我尝试过的是：

mix-blend-mode-没有帮助
类似：filter: invert(1) grayscale(1) contrast(16) drop-shadow(.05em .05em orange);

请记住，它不仅应在许多情况下都有效，例如深色/浅色背景。我可以动态地处理文本的颜色吗？

Answer 1

您只需添加深色的text-shadow，就可以更好地再现将要使用的图像：

.infobox {
    width: 110mm;
    height: 65mm;
    background:
    linear-gradient(to bottom,transparent,#fff),
    url(https://i.pinimg.com/564x/86/70/f2/8670f2ab34bf4082bf3cef004aae0826.jpg);
  background-size: cover;
  position: relative;
}

.text {
  position: absolute; bottom: 0; 
  text-align: center; color: white;
  text-shadow: -1px 0 1px #000,
               1px 0 1px #000,
               1px 1px 1px #000,
               -1px -1px 1px #000,
               0 1px 1px #000,
               0 -1px 1px #000;
}

<div class="infobox">
  <span class="text">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi vel quam in enim pulvinar fringilla. Etiam molestie convallis pharetra. Sed et tortor tortor. Vestibulum ligula ex, rhoncus semper metus ut, hendrerit porttitor risus. Quisque at porta magna. Phasellus vel vulputate diam. Maecenas sem est, aliquet nec odio euismod, posuere luctus nisl. Vestibulum posuere iaculis massa, sed cursus dui pellentesque sed.</span>
</div>

Answer 2

另一种解决方案是使图像更暗。

.infobox {
  width: 110mm;
  height: 65mm;
  background-image:url(https://i.pinimg.com/564x/86/70/f2/8670f2ab34bf4082bf3cef004aae0826.jpg);
  background-size: cover;
  position: relative;
}

.infobox:before {
  content: '';
  position: absolute;
  top: 0; right: 0; bottom: 0; left: 0;
  background: rgba(0, 0, 0, 0.4);
}

.text {
  position: absolute; bottom: 0; 
  text-align: center; color: white;
}

<div class="infobox">
  <span class="text">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi vel quam in enim pulvinar fringilla. Etiam molestie convallis pharetra. Sed et tortor tortor. Vestibulum ligula ex, rhoncus semper metus ut, hendrerit porttitor risus. Quisque at porta magna. Phasellus vel vulputate diam. Maecenas sem est, aliquet nec odio euismod, posuere luctus nisl. Vestibulum posuere iaculis massa, sed cursus dui pellentesque sed.</span>
</div>

更改文本的颜色以响应背景色

2 个答案: