用CSS遮盖图像 [英] masking image with CSS

问题描述

我做了这样的设计

如何使用CSS遮罩背景?

How to mask the background with css?

我已经尝试过这样的代码

I have tried code like this

.img-poster {
  display: block;
  max-width: 100%;
  -webkit-mask-image: url(https://cdn.pbrd.co/images/GYiCod1.png), url(https://cdn.pbrd.co/images/GYiCQsM.png);
  -webkit-mask-position: bottom center, center center;
  -webkit-mask-repeat: no-repeat, no-repeat;
}

.add {
  -webkit-mask-composite: add;
}

<section class="section poster-container">
  <img src="https://imagejournal.org/wp-content/uploads/bb-plugin/cache/23466317216_b99485ba14_o-panorama.jpg" alt="" class="img-poster add img-responsive">
</section>

我使用的蒙版图像是

https://i.stack.imgur.com/fg2k5.png

https://i.stack.imgur.com/zmylJ.png

你们能告诉我我的代码有什么问题吗?我知道我可以导入到png，但是我尝试使用CSS

Can you guys tell me what is wrong in my code? I know I can just import to png, but I tried to use css

推荐答案

您只需要考虑一个图像，即蒙版的底部，然后对另一部分使用简单的渐变即可.您也不需要 mask-composite .只需调整大小/位置，以使两个遮罩都不会重叠:

You only need to consider one image which is the bottom part of your mask then use a simple gradient for the other part. You also don't need mask-composite. Simply adjust the size/position so that both mask don't overlap:

.img-poster {
  display: block;
  max-width: 100%;
  -webkit-mask:  
     linear-gradient(#fff,#fff)              top,
     url(https://i.ibb.co/5WvbqgG/zmylJ.png) bottom;
  -webkit-mask-size:
     100% calc(100% - 30px),
     auto 30px;
  -webkit-mask-repeat: repeat-x;
  mask:  
     linear-gradient(#fff,#fff)              top,
     url(https://i.ibb.co/5WvbqgG/zmylJ.png) bottom;
  mask-size:
     100% calc(100% - 30px),
     auto 30px;
  mask-repeat: repeat-x;
}

<section class="section poster-container">
  <img src="https://imagejournal.org/wp-content/uploads/bb-plugin/cache/23466317216_b99485ba14_o-panorama.jpg" alt="" class="img-poster add img-responsive">
</section>

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