CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 594 · 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 CSS selector matches this element?
   <span class="menu" id="logo">Hello</span> (a) #logo (b) #end (c) .note (d) p
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.True or false: body is an element selector. (a) False (b) True
4. 4.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="red"> (c) <div id="top"> (d) <li class="red">
5. 5.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
6. 6.🎯 Which CSS selector matches this element?
   <li class="star" id="intro">Hello</li> (a) .menu (b) div (c) .intro (d) li
7. 7.🎯 Which sign starts an id selector? (a) # (b) & (c) . (d) @
8. 8.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
9. 9.True or false: .menu is an id selector. (a) True (b) False
10. 10.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) .star (b) #star (c) p (d) .logo
11. 11.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) #main (b) #note (c) .note (d) div
12. 12.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
13. 13.🎯 Which element does the selector #top style? (a) <p class="big"> (b) <span id="top"> (c) <span id="intro"> (d) <span class="top">
14. 14.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) p (b) #box (c) .star (d) #end
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) h2 (b) #big (c) .red (d) #top
16. 16.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) .box (b) #top (c) #box (d) .star
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) .menu (b) .hero (c) h2 (d) #top
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) #star (b) #main (c) h2 (d) .menu
19. 19.🎯 Which element does the selector #top style? (a) <h2 class="top"> (b) <li class="note"> (c) <h2 id="top"> (d) <h2 id="intro">
20. 20.True or false: li is a class selector. (a) True (b) False
21. 21.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <h1 class="big"> (c) <h2> (d) <li class="big">
22. 22.True or false: .big is a class selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) #hero (b) .hero (c) #box (d) #top
24. 24.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) #big (b) div (c) span (d) .red
25. 25.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) .main (b) div (c) #box (d) li
26. 26.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) h2 (b) #big (c) h1 (d) .main
28. 28.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #note (b) .note (c) .top (d) .big
29. 29.🎯 Which element does the selector #intro style? (a) <div class="intro"> (b) <div id="main"> (c) <span class="menu"> (d) <div id="intro">
30. 30.True or false: #logo is an id selector. (a) False (b) True
31. 31.🎯 Which element does the selector .big style? (a) <div class="box"> (b) <li id="big"> (c) <li class="red"> (d) <li class="big">
32. 32.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
33. 33.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
35. 35.True or false: p is an id selector. (a) False (b) True
36. 36.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
37. 37.🎯 Which element does the selector li style? (a) <li class="star"> (b) <p id="end"> (c) <span class="star"> (d) <div>
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) #big (b) #hero (c) .big (d) h2
39. 39.True or false: .star is a class selector. (a) False (b) True
40. 40.True or false: img is an id selector. (a) True (b) False

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