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【简答题】

In css3, three necessary steps of text overflow processing are: white-space: __;overflow:__; text-overflow:__; .

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【单选题】In css3, the incorrect statement about shadow background is ( ).

A.
using box-shadow to define the shadow style.
B.
using "inset" to set the inner shadow in box-shadow.
C.
the default color in box-shadow is black.
D.
In the box-shadow attribute, a negative value in the horizontal direction means moving to the right, and a negative value in the vertical direction means moving down.

【单选题】Which of the following statements about the use of svg is incorrect? ( )

A.
The <polyline> is used to draw polylines.
B.
The <polygon> is used to draw a polygon.
C.
The <ellipse> is used to draw a circle.
D.
The <rect> is used to draw a rectangle.

【单选题】In css3, which of the following statements about the sibling selector is incorrect? ( )

A.
A sibling selector can select an element that follows another element, and both have the same parent element.
B.
Sibling selector only retrieves backward, not forward.
C.
Use "~" to represent ordinary sibling selectors.
D.
Use "+" to represent adjacent sibling selector to indicate all subsequent elements with the same parent element.

【单选题】Which of the following statements about the following code iscorrect? ( ).box div[class*=s]{background: red }

A.
The background color ofthe first div with s in its class name in box is red.
B.
The background color of all the divs with s in their class names in box is red.
C.
The background color of the first div ending with s in its class name in box is red.
D.
The background color of all the divs ending with s in their class names in box is red.

【单选题】Which of the following codes can achieve the following effect? (The background color of all the divs starting with n in their class names in box is red.) ( )

A.
.box div[class^=n]{background:red}
B.
.box div[class*=n]{background:red}
C.
box div[class=n]{background:red}
D.
.box div[class$=n]{background:red}