CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 236 · 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: .big is a class selector. (a) False (b) True
2. 2.🎯 Which CSS selector matches this element?
   <li class="menu" id="hero">Hello</li> (a) .hero (b) .note (c) #menu (d) li
3. 3.🎯 Which CSS selector matches this element?
   <div class="big" id="hero">Hello</div> (a) #top (b) #big (c) .hero (d) .big
4. 4.🎯 Which CSS selector matches this element?
   <h2 class="note" id="intro">Hello</h2> (a) #note (b) .note (c) li (d) .big
5. 5.🎯 Which CSS selector matches this element?
   <p class="menu" id="end">Hello</p> (a) #menu (b) h1 (c) .end (d) #end
6. 6.True or false: .menu is a class selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <li class="big" id="hero">Hello</li> (a) .red (b) #top (c) div (d) li
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="box" id="end">Hello</h1> (a) h1 (b) h2 (c) .end (d) #box
9. 9.🎯 Which sign starts a class selector? (a) . (b) # (c) & (d) @
10. 10.True or false: .note is an id selector. (a) False (b) True
11. 11.True or false: #top is an id selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) .main (b) .big (c) #main (d) #logo
13. 13.True or false: li is an id selector. (a) True (b) False
14. 14.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
15. 15.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
16. 16.True or false: img is an element selector. (a) True (b) False
17. 17.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
18. 18.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) .box (b) .star (c) #box (d) div
19. 19.🎯 Can many elements share the same class? (a) Yes (b) No
20. 20.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
21. 21.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) #menu (b) .main (c) .note (d) .menu
22. 22.🎯 Which element does the selector .star style? (a) <div id="star"> (b) <span class="note"> (c) <div class="menu"> (d) <div class="star">
23. 23.True or false: #end is an id selector. (a) True (b) False
24. 24.True or false: .big is an id selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) p (b) .end (c) #hero (d) #end
26. 26.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) .end (b) div (c) .note (d) .big
27. 27.True or false: body is a class selector. (a) True (b) False
28. 28.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
29. 29.🎯 Which element does the selector div style? (a) <span> (b) <p class="menu"> (c) <div class="menu"> (d) <h1 id="logo">
30. 30.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h1 class="big"> (c) <h2 class="red"> (d) <h1 class="note">
31. 31.True or false: p is an id selector. (a) False (b) True
32. 32.True or false: .big is an element selector. (a) False (b) True
33. 33.🎯 Which element does the selector .note style? (a) <h1 class="red"> (b) <p class="big"> (c) <p class="note"> (d) <p id="note">
34. 34.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) h1 (b) h2 (c) #menu (d) .logo
36. 36.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
37. 37.🎯 Which element does the selector #main style? (a) <li id="main"> (b) <div class="red"> (c) <li id="logo"> (d) <li class="main">
38. 38.True or false: h1 is an element selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) .logo (b) .red (c) p (d) #red
40. 40.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .red (b) #big (c) .top (d) .big

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