CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 393 · 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: .note is a class selector. (a) True (b) False
2. 2.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
3. 3.🎯 Which element does the selector .big style? (a) <span class="red"> (b) <span id="big"> (c) <p class="box"> (d) <span class="big">
4. 4.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="box" id="main">Hello</h2> (a) #main (b) .star (c) #logo (d) .main
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="red" id="intro">Hello</h1> (a) h2 (b) .red (c) #main (d) .intro
7. 7.🎯 Can many elements share the same class? (a) No (b) Yes
8. 8.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="note" id="logo">Hello</h1> (a) #end (b) #note (c) .logo (d) h1
10. 10.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) .red (b) .hero (c) #hero (d) #top
11. 11.True or false: p is an id selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) #red (b) .end (c) #end (d) #hero
13. 13.True or false: #top is an element selector. (a) False (b) True
14. 14.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) .logo (b) .star (c) #box (d) h2
16. 16.🎯 Which element does the selector #intro style? (a) <li class="menu"> (b) <h2 id="intro"> (c) <h2 class="intro"> (d) <h2 id="main">
17. 17.🎯 Which element does the selector #main style? (a) <span class="main"> (b) <span id="logo"> (c) <p class="star"> (d) <span id="main">
18. 18.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) h1 (b) #red (c) .box (d) p
19. 19.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
20. 20.True or false: #hero is an element selector. (a) False (b) True
21. 21.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) .intro (b) #star (c) #main (d) #intro
23. 23.True or false: #hero is an id selector. (a) False (b) True
24. 24.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
25. 25.True or false: #top is a class selector. (a) True (b) False
26. 26.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <div id="top"> (c) <h2> (d) <h1 class="red">
27. 27.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
28. 28.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) #logo (b) .red (c) #red (d) .box
29. 29.True or false: .big is a class selector. (a) False (b) True
30. 30.True or false: #end is a class selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span> (a) p (b) #menu (c) #logo (d) #end
32. 32.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) .menu (b) #menu (c) .note (d) .top
33. 33.🎯 Which sign starts a class selector? (a) . (b) # (c) & (d) @
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) .star (b) .menu (c) #star (d) .main
35. 35.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 2 (d) 5
36. 36.True or false: #top is an id selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) #note (b) h2 (c) .big (d) h1
38. 38.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
39. 39.🎯 Which element does the selector #main style? (a) <li class="red"> (b) <h2 id="main"> (c) <h2 id="logo"> (d) <h2 class="main">
40. 40.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector

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