CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 323 · 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?
   <li class="star" id="intro">Hello</li> (a) #main (b) #intro (c) .intro (d) .menu
3. 3.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
4. 4.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
5. 5.True or false: .menu is an element selector. (a) False (b) True
6. 6.True or false: li is an id selector. (a) True (b) False
7. 7.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
8. 8.🎯 Which element does the selector .menu style? (a) <h2 class="menu"> (b) <li class="big"> (c) <h2 class="note"> (d) <h2 id="menu">
9. 9.🎯 Which sign starts an id selector? (a) # (b) & (c) . (d) @
10. 10.True or false: .star is an element selector. (a) True (b) False
11. 11.True or false: .star is a class selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) #box (b) .main (c) #logo (d) div
13. 13.🎯 Which element does the selector .box style? (a) <h1 class="box"> (b) <h2 class="menu"> (c) <h1 id="box"> (d) <h1 class="star">
14. 14.🎯 Which element does the selector #intro style? (a) <div id="intro"> (b) <div id="main"> (c) <div class="intro"> (d) <span class="star">
15. 15.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) #top (b) .big (c) .top (d) div
16. 16.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) #hero (b) .menu (c) .end (d) #menu
18. 18.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h1 id="note"> (c) <h1 class="note"> (d) <h2 class="red">
19. 19.🎯 Which element does the selector #intro style? (a) <h2 class="note"> (b) <h1 class="intro"> (c) <h1 id="intro"> (d) <h1 id="main">
20. 20.🎯 Which element does the selector #intro style? (a) <p class="menu"> (b) <span id="intro"> (c) <span id="main"> (d) <span class="intro">
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) li (b) h2 (c) .logo (d) .red
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: #logo is a class selector. (a) True (b) False
24. 24.🎯 Which element does the selector #top style? (a) <div id="top"> (b) <div class="top"> (c) <span class="star"> (d) <div id="intro">
25. 25.True or false: #end is an id selector. (a) False (b) True
26. 26.True or false: #main is an id selector. (a) False (b) True
27. 27.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
28. 28.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
29. 29.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .intro (b) div (c) .menu (d) #menu
30. 30.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) .box (b) span (c) #hero (d) .hero
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) h2 (b) #top (c) h1 (d) .big
32. 32.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="star"> (c) <div id="main"> (d) <h1 class="star">
33. 33.True or false: #main is a class selector. (a) True (b) False
34. 34.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="menu"> (c) <h2 class="menu"> (d) <span id="hero">
35. 35.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="note"> (c) <div class="note"> (d) <span id="main">
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) #main (b) .red (c) h1 (d) #big
38. 38.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) .big (b) .note (c) #note (d) div
39. 39.True or false: #logo is an id selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) h1 (b) .top (c) .note (d) #menu

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