CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 938 · 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.True or false: h1 is an id selector. (a) True (b) False
2. 2.🎯 Which element does the selector li style? (a) <div> (b) <p id="main"> (c) <span class="menu"> (d) <li class="menu">
3. 3.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
4. 4.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
5. 5.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
6. 6.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
7. 7.True or false: #top is an id selector. (a) False (b) True
8. 8.🎯 Which element does the selector .star style? (a) <li class="note"> (b) <h2 class="menu"> (c) <h2 class="star"> (d) <h2 id="star">
9. 9.True or false: .menu is an element selector. (a) True (b) False
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) .top (b) .star (c) li (d) #top
11. 11.🎯 Which element does the selector .red style? (a) <span class="box"> (b) <span id="red"> (c) <span class="red"> (d) <p class="star">
12. 12.True or false: #hero is a class selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) .box (b) div (c) #end (d) .end
14. 14.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
15. 15.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
16. 16.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
17. 17.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) #note (b) .big (c) #end (d) #logo
18. 18.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
19. 19.🎯 Which element does the selector .note style? (a) <p class="note"> (b) <p class="big"> (c) <p id="note"> (d) <h1 class="red">
20. 20.True or false: p is an id selector. (a) True (b) False
21. 21.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <span id="hero"> (c) <div class="menu"> (d) <li>
22. 22.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) #note (b) h1 (c) .main (d) .note
23. 23.True or false: .card is a class selector. (a) False (b) True
24. 24.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) .logo (b) h2 (c) #end (d) #logo
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) #star (b) li (c) .hero (d) h2
27. 27.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) h1 (b) .big (c) .top (d) .note
28. 28.🎯 Which CSS selector matches this element?
    <div class="box" id="end">Hello</div> (a) div (b) #box (c) .star (d) #hero
29. 29.🎯 Can many elements share the same class? (a) No (b) Yes
30. 30.🎯 Which element does the selector #intro style? (a) <h1 class="intro"> (b) <h1 id="main"> (c) <h1 id="intro"> (d) <h2 class="red">
31. 31.True or false: body is an id selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) .red (b) #big (c) #logo (d) .logo
33. 33.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) .red (b) #top (c) p (d) #hero
34. 34.🎯 Which element does the selector .red style? (a) <h2 class="star"> (b) <h1 class="red"> (c) <h1 id="red"> (d) <h1 class="box">
35. 35.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
36. 36.True or false: #logo is an id selector. (a) False (b) True
37. 37.True or false: img is an id selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) span (b) .menu (c) div (d) #star
39. 39.True or false: img is a class selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) #logo (b) .red (c) #end (d) #big

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