CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 686 · 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?
   <h1 class="big" id="logo">Hello</h1> (a) h1 (b) #big (c) .logo (d) .red
2. 2.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
3. 3.True or false: .card is an element selector. (a) True (b) False
4. 4.True or false: .menu is a class selector. (a) False (b) True
5. 5.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
6. 6.🎯 Which CSS selector matches this element?
   <div class="box" id="logo">Hello</div> (a) .logo (b) span (c) #logo (d) #box
7. 7.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
8. 8.True or false: #hero is an id selector. (a) False (b) True
9. 9.True or false: #end is an element selector. (a) False (b) True
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) #intro (b) #menu (c) #top (d) .top
11. 11.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2> (a) h2 (b) #menu (c) li (d) #top
13. 13.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <h2 id="red"> (c) <li class="star"> (d) <h2 class="box">
14. 14.🎯 Can many elements share the same class? (a) Yes (b) No
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) #box (b) .star (c) .top (d) #top
16. 16.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
17. 17.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) #star (b) .menu (c) h1 (d) p
18. 18.🎯 Which element does the selector .big style? (a) <li class="big"> (b) <div class="box"> (c) <li id="big"> (d) <li class="red">
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) h2 (b) #intro (c) li (d) #big
20. 20.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) span (b) .top (c) p (d) #box
21. 21.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) p (b) #top (c) #hero (d) .hero
22. 22.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) .logo (b) #end (c) span (d) #box
23. 23.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="logo"> (c) <h1 class="menu"> (d) <span class="menu">
24. 24.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) #end (b) .red (c) p (d) .logo
25. 25.True or false: .star is an id selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) #main (b) .big (c) #note (d) .note
27. 27.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
28. 28.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="logo"> (c) <h2 class="big"> (d) <div class="big">
29. 29.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
30. 30.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) .star (b) #box (c) h1 (d) .box
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) h2 (b) #box (c) .main (d) .box
32. 32.True or false: .big is an id selector. (a) False (b) True
33. 33.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="note"> (c) <h2 id="intro"> (d) <span class="note">
35. 35.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) .top (b) .big (c) h2 (d) li
37. 37.True or false: #logo is an id selector. (a) False (b) True
38. 38.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) .intro (b) #main (c) #star (d) .star
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) h1 (b) #red (c) #end (d) .box

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