How to achieve background Image Transparency with CSS
This article mainly shows you "CSS how to achieve background image transparency", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "how to achieve background image transparency in CSS" this article.
First, let's take a look at the HTML code
Dandelion
BG is an empty div and "dandelion" is written outside it.
In other words, the dandelion will be placed on top of the image using the position attribute. Let's take a look at the specific code example.
First, give the relative position (position:relative;) to .content.
To make it easier to understand the transparency of the background, let's first give a black background.
.content {
Width:450px
Height:300px
Background:#000
Position:relative;/* relative position * /
}
P {
Color:#fff
Font-weight:bold
Text-align:center
}
Next, let's set .bg
Set width and height to 100% and set position to absolute position on the upper left (left:0;top:0;).
.bg {
Width:100%
Height:100%
Position:absolute
Top:0
Left:0
Background:url (img/pugongying.jpg)
Background-size:cover
Opacity:0.5
}
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