CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 180 · 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 sign starts a class selector? (a) @ (b) # (c) & (d) .
2. 2.🎯 Which CSS selector matches this element?
   <span class="note" id="end">Hello</span> (a) .big (b) .end (c) #note (d) #end
3. 3.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
4. 4.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <h1 class="note"> (c) <p class="star"> (d) <p id="star">
5. 5.🎯 Which CSS selector matches this element?
   <span class="menu" id="intro">Hello</span> (a) .note (b) span (c) .intro (d) p
6. 6.🎯 Which CSS selector matches this element?
   <span class="big" id="hero">Hello</span> (a) #top (b) p (c) .hero (d) span
7. 7.🎯 Which CSS selector matches this element?
   <span class="menu" id="top">Hello</span> (a) #intro (b) .top (c) #menu (d) .menu
8. 8.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <li class="note"> (c) <h2 class="star"> (d) <h2 class="menu">
9. 9.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
10. 10.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
11. 11.🎯 Can many elements share the same class? (a) Yes (b) No
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) h2 (b) #box (c) h1 (d) .end
13. 13.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
14. 14.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
15. 15.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
16. 16.True or false: .card is an id selector. (a) False (b) True
17. 17.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) #menu (b) h2 (c) #logo (d) .note
19. 19.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
20. 20.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) #box (b) .star (c) span (d) p
21. 21.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #red (b) .end (c) .box (d) #end
22. 22.True or false: .card is a class selector. (a) True (b) False
23. 23.True or false: #end is an element selector. (a) False (b) True
24. 24.🎯 Which element does the selector .menu style? (a) <span id="menu"> (b) <p class="big"> (c) <span class="menu"> (d) <span class="note">
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) #end (b) #big (c) .red (d) h2
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) li (b) #menu (c) #intro (d) #top
27. 27.🎯 Which element does the selector #logo style? (a) <div id="end"> (b) <div class="logo"> (c) <span class="big"> (d) <div id="logo">
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) h2 (b) .main (c) .red (d) li
29. 29.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) #red (b) #top (c) .box (d) #intro
30. 30.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) div (b) .logo (c) #end (d) li
31. 31.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <span class="note"> (c) <span id="note"> (d) <p class="red">
32. 32.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
34. 34.True or false: h1 is an element selector. (a) True (b) False
35. 35.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 id="big"> (c) <h1 class="red"> (d) <h2 class="box">
36. 36.True or false: .note is an element selector. (a) False (b) True
37. 37.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
38. 38.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) #note (b) p (c) .big (d) #logo
39. 39.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) .hero (b) #top (c) #hero (d) #star
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) .logo (b) h2 (c) li (d) #end

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