How to blur an image while showing text over it (hover) with css

问题

Okay, so. I have a problem.

I wanted to have a picture that blurred on hover, and at the same time making text appear over it.

I've found a simple way to blur the image and to make the text appear, but not both at the same time; in fact merging the two codes together make it appear as the picture isn't blurring at all. I think this is due to the fact that the text actually covers the image and the browser doesn't receive the message that the image is being hovered.

Here is the image with text over it and here is the image with blur on hover How can I solve that issue? I'm struggling and i think I have found another way of doing it but it's a bit cumbersome.

Here is some code:

	h1,p {
		margin: 0;
		padding: 0;
	}
	.imgtext {		
		color: white;
		background: rgba(0,0,0,0.89);
		width: 155px;
		height: 135px;
		padding: 50px 15px 0 15px;
		opacity: 0;
		position: absolute;
		bottom: 0px;
		-webkit-transition: all 300ms ease-in-out;
		-o-transition: all 300ms ease-in-out;
		transition: all 300ms ease-in-out;
	}
	.pic {
   	position: relative;
		overflow: hidden;
		width: 185px;
		height: 185px;
		margin: 50px auto;
	}
	.pic img:hover{
		-webkit-transition: all 300ms ease-in-out;
		-o-transition: all 300ms ease-in-out;
		transition: all 300ms ease-in-out;
		-webkit-filter: blur(1px);
		-moz-filter: blur(1px);
		-ms-filter: blur(1px);
		-o-filter: blur(1px);
		filter: blur(1px);
		transform: scale(1.03);
	}
	.imgtext:hover {
		-webkit-opacity: 100;
		opacity: 100;
	}

	<div class="pic">
		<img src="http://nicolacornolti.com/photos/film/img/1.png">
		<span class="imgtext">
			<h1>THIS IS A TITLE</h1>
			<p>and this is a description</p>
		</span>

回答1:

Use the pseudo class :hover on the .pic container element, and not on each individual child element.

For example:

.pic .imgtext:hover to .pic:hover .imgtext

and

.pic img:hover to .pic:hover img

h1,
p {
  margin: 0;
  padding: 0;
}

.imgtext {
  color: white;
  background: rgba(0, 0, 0, 0.89);
  width: 155px;
  height: 135px;
  padding: 50px 15px 0 15px;
  opacity: 0;
  position: absolute;
  bottom: 0px;
  -webkit-transition: all 300ms ease-in-out;
  -o-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
}

.pic {
  position: relative;
  overflow: hidden;
  width: 185px;
  height: 185px;
  margin: 50px auto;
}

.pic:hover img {
  -webkit-transition: all 300ms ease-in-out;
  -o-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
  -webkit-filter: blur(1px);
  -moz-filter: blur(1px);
  -ms-filter: blur(1px);
  -o-filter: blur(1px);
  filter: blur(1px);
  transform: scale(1.03);
}

.pic:hover .imgtext {
  -webkit-opacity: 1;
  opacity: 1;
}

<div class="pic">
  <img src="http://nicolacornolti.com/photos/film/img/1.png">
  <span class="imgtext">
    <h1>THIS IS A TITLE</h1>
    <p>and this is a description</p>
  </span>
</div>

回答2:

First of all your text-span was missing a left position setting, which i added (0). Apart from that, I changed the selectors for the hover state so that the image and the text settings both change when their parent element .pic is hovered:

h1,
p {
  margin: 0;
  padding: 0;
}

.imgtext {
  color: white;
  width: 155px;
  height: 135px;
  padding: 50px 15px 0 15px;
  opacity: 0;
  position: absolute;
  bottom: 0px;
  left: 0;
  -webkit-transition: all 300ms ease-in-out;
  -o-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
}

.pic {
  position: relative;
  overflow: hidden;
  width: 185px;
  height: 185px;
  margin: 50px auto;
}

.pic:hover img {
  -webkit-transition: all 300ms ease-in-out;
  -o-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
  -webkit-filter: blur(1px);
  -moz-filter: blur(1px);
  -ms-filter: blur(1px);
  -o-filter: blur(1px);
  filter: blur(1px);
  transform: scale(1.03);
}

.pic:hover .imgtext {
  -webkit-opacity: 1;
  opacity: 1;
}

<div class="pic">
  <img src="http://nicolacornolti.com/photos/film/img/1.png">
  <span class="imgtext">
			<h1>THIS IS A TITLE</h1>
			<p>and this is a description</p>
		</span>
</div>

回答3:

https://codepen.io/DannaB67/pen/JJJQqX

h1,p {
		margin: 0;
		padding: 0;
}
.imgtext {		
		color: white;
		background: rgba(0,0,0,0.6);
		width: 155px;
		height: 135px;
		padding: 50px 15px 0 15px;
		opacity: 0;
		position: absolute;
		bottom: 0px;
		-webkit-transition: all 0.8s ease-in-out;
		-o-transition: all 0.8s ease-in-out;
		transition: all 0.8s ease-in-out;
}
.pic {
		position: relative;
		overflow: hidden;
		width: 185px;
		height: 185px;
		margin: 50px auto;
}
.pic:hover img {
		-webkit-transition: all 0.3s ease-in-out;
		-o-transition: all 0.3s ease-in-out;
		transition: all 0.3s ease-in-out;
		-webkit-filter: blur(2px);
		-moz-filter: blur(2px);
		-ms-filter: blur(2px);
		-o-filter: blur(2px);
		filter: blur(2px);
		transform: scale(1.08);
}
.imgtext:hover {
		-webkit-opacity: 40;
		opacity: 40;
}

<div class="pic">
		<img src="http://nicolacornolti.com/photos/film/img/1.png">
		<span class="imgtext">
			<h1>THIS IS A TITLE</h1>
			<p>and this is a description</p>
		</span>
</div>

来源：https://stackoverflow.com/questions/44708432/how-to-blur-an-image-while-showing-text-over-it-hover-with-css