Can Someone Please Explain This Question For CSS?

Question

Add a circular radial gradient to produce red and blue, with color-stops accordingly at 15 pixels and 25 pixels.
background:

radial

-

gradient

(50px

50

px, red

15

px, blue 25px);

Answer 1

background: radial-gradient
(50px 50px, red 15px, blue 25px);

Answer 2

Drag and drop from the options below to apply 50% opacity to the div, and make it also work in IE:

div {
opacity: 0.5 ;
filter :alpha (opacity=50 );
}

Answer 3

Add a circular radial gradient to produce red and blue, with color-stops accordingly at 15 pixels and 25 pixels.

background:

radial

-

gradient

(50px

50

px, red

15

px, blue 25px);

Answer 4

background: radial-gradient
(50px 50px, red 15px, blue 25px);

Answer 5

background: radial-gradient
(50px 50px, red 15px, blue 25px);

Answer 6

In the background-clip property, which value allows for the creation of transparent borders?

padding-box

Answer 7

Drag and drop from the options below to make the background image of the element 100 x 100 pixels in size. Also, set the opacity of the element to 50%:

#element {
background-image: url ('test.jpg');
background-size : 100px 100px;
opacity : 0.5 ;
}

Answer 8

div { opacity: 0.5 ; filter :alpha (opacity=50 ); }

thanks

Answer 9

Drag and drop from the options below to create transparent borders for an element.

.test {
background-clip : padding-box ;
border: 20px solid rgba(0, 0, 0, 0.3);
}

Answer 10

In the background-clip property, which value allows for the creation of transparent borders?

padding-box

Answer 11

Drag and drop from the options below to make the background image of the element 100 x 100 pixels in size. Also, set the opacity of the element to 50%:

#element {
background-image: url('test.jpg');
background-size: 100px 100px;
opacity: 0.5;
}

Answer 12

Add a circular radial gradient to produce red and blue, with color-stops accordingly at 15 pixels and 25 pixels.

background: radial - gradient (50px 50 px, red 15 px, blue 25px);

Answer 13

Drag and drop from the options below to apply 50% opacity to the div, and make it also work in IE:

div {
opacity: 0.5;
filter:alpha(opacity=50);
}

Answer 14

background:

radial

-

gradient

(50px

50

px, red

15

px, blue 25px);

Answer 15

div {
opacity: 0.5;
filter:alpha(opacity=50);
}

Answer 16

Add a circular radial gradient to produce red and blue, with color-stops accordingly at 15 pixels and 25 pixels.

background: radial-gradient
(50px 50px, red 15px, blue 25px);

Answer 17

Drag and drop from the options below to make the background image of the element 100 x 100 pixels in size. Also, set the opacity of the element to 50%:

#element {
background-image: url ('test.jpg');
background-size : 100px 100px;
opacity : 0.5 ;
}

Answer 18

div {
opacity: 0.5 ;
filter :alpha (opacity=50 );
}

Answer 19

Add a circular radial gradient to produce red and blue, with color-stops accordingly at 15 pixels and 25 pixels.
background:
radial
-
gradient

(50px
50
px, red
15
px, blue 25px);

Answer 20

What is 50px 50px in first parameter?
Can anyone justify that?