How does css use the transparent property to set transparency
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So, are you going to ask what the csstransparent attribute is and what's the use?
In fact, csstransparent is an all-transparent black (black) shorthand, that is, a value similar to rgba; it is used to specify a fully transparent color.
For example:
We define it in css: background:transparent, which means setting the background to be transparent.
However, in fact, the default color of background is transparent, so both write and unwrite are the same. So why do you sometimes need to set background to transparent? In what scenarios will transparent be used:
When one element overrides another and you want to display the following element, you need to set the background of the above element to transparent
The use of the transparent attribute in different css versions:
In css1, transparent is used as a parameter value of background-color to indicate background transparency.
In css2, border-color also begins to accept transparent as a parameter value, and "OpeneBook (tm) PublicationStructure1.0.1" [OEB101] extends to color and accepts transparent as a parameter value.
In css3, transparent is extended to any attribute that has a color value.
Let's look at compatibility:
1.jpg
# 1:border-color does not accept this value
# 2:color does not accept this value
The transparent property draws various triangles (used with the border property)
* {
Margin:0
Padding:0
}
.demo {
Margin:40pxauto
Width:800px
/ * background-color:#f0ac6b;*/
}
.demo * {
Float:left
Margin:20px30px
Width:0px
Height:0px
}
.t1 {
/ * background-color:#f0ac6b;*/
Border-bottom:40pxsolidred
Border-right:20pxsolidtransparent
Border-left:20pxsolidtransparent
}
.t2 {
/ * background-color:#f0ac6b;*/
Border-bottom:40pxsolidtransparent
Border-right:40pxsolidred
/ * border-left:20pxsolidtransparent;*/
}
.t3 {
Border-top:40pxsolidred
Border-right:20pxsolidtransparent
Border-left:20pxsolidtransparent
}
.t4 {
Border-top:40pxsolidtransparent
Border-left:40pxsolidred
}
.t5 {
Border-top:40pxsolidred
Border-right:40pxsolidtransparent
}
.t6 {
Border-left:40pxsolidtransparent
Border-bottom:40pxsolidred
}
.t7 {
Border-left:40pxsolidred
Border-bottom:20pxsolidtransparent
Border-top:20pxsolidtransparent
}
.t8 {
Border-right:40pxsolidred
Border-bottom:20pxsolidtransparent
Border-top:20pxsolidtransparent
}
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