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#1 Which of the following is an invalid value of the line-height property?
#2 Which of the following is an invalid value of the vertical-align property?
#3 Which of the following is an invalid CSS selector?
#4 background-position:top; is the same as
#5 What is the default value of the box-sizing property?
#6 Which of the following is an invalid value of the background-position property?
#7 How to select all the images inside a section?
#8 How to clear float?
#9 How to correctly define media query?
#10 Which selector has the highest specificity?
#11 border-radius:0 10px 0 0; is the same as
#12 Which selector has the lowest specificity?
#13 Which of the following is an invalid value of the position property?
#14 Which CSS property cannot be used with negative values?
#15 What is the default value of the z-index property?
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