CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 186 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.🎯 Which element does the selector .box style? (a) <h1 class="menu"> (b) <p class="star"> (c) <p class="box"> (d) <p id="box">
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
4. 4.🎯 Which element does the selector #end style? (a) <p class="end"> (b) <h1 class="note"> (c) <p id="end"> (d) <p id="hero">
5. 5.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
6. 6.True or false: img is a class selector. (a) False (b) True
7. 7.True or false: body is an element selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="hero">Hello</h1> (a) .menu (b) #menu (c) #top (d) h2
9. 9.True or false: #top is an id selector. (a) False (b) True
10. 10.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
11. 11.🎯 Which element does the selector span style? (a) <span class="red"> (b) <p> (c) <h2 id="hero"> (d) <h1 class="red">
12. 12.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) #intro (b) .top (c) #top (d) div
13. 13.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) #intro (b) .top (c) #top (d) .red
14. 14.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) p (b) .end (c) #hero (d) #big
15. 15.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
16. 16.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) p (b) #intro (c) #main (d) .red
17. 17.True or false: #main is a class selector. (a) False (b) True
18. 18.True or false: .big is an element selector. (a) True (b) False
19. 19.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
20. 20.True or false: .star is a class selector. (a) True (b) False
21. 21.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
22. 22.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
23. 23.True or false: .menu is an element selector. (a) True (b) False
24. 24.🎯 Which element does the selector span style? (a) <h2 id="end"> (b) <span class="big"> (c) <p> (d) <h1 class="big">
25. 25.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
26. 26.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) .star (b) #logo (c) #box (d) h1
27. 27.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
28. 28.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) .intro (b) span (c) #red (d) #main
29. 29.True or false: .note is a class selector. (a) True (b) False
30. 30.True or false: .big is an id selector. (a) False (b) True
31. 31.True or false: .menu is an id selector. (a) True (b) False
32. 32.True or false: #hero is an id selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) p (b) .red (c) .hero (d) h1
34. 34.True or false: h1 is an id selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) h1 (b) #box (c) .logo (d) .star
36. 36.True or false: #main is an element selector. (a) True (b) False
37. 37.🎯 Which element does the selector p style? (a) <li id="end"> (b) <p class="star"> (c) <h2 class="star"> (d) <h1>
38. 38.🎯 Which CSS selector matches this element?
    <li class="box" id="end">Hello</li> (a) #hero (b) #box (c) .box (d) .star
39. 39.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <h1 class="note"> (c) <li class="note"> (d) <h2>
40. 40.True or false: .menu is a class selector. (a) False (b) True

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