CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 286 · 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.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
2. 2.True or false: #top is an element selector. (a) False (b) True
3. 3.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
4. 4.🎯 Which CSS selector matches this element?
   <li class="box" id="intro">Hello</li> (a) #intro (b) #main (c) .star (d) div
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="box" id="logo">Hello</h2> (a) .box (b) .logo (c) #box (d) li
6. 6.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
7. 7.🎯 Which CSS selector matches this element?
   <p class="red" id="top">Hello</p> (a) #red (b) h1 (c) #top (d) .box
8. 8.🎯 Which element does the selector h2 style? (a) <span id="main"> (b) <div class="box"> (c) <h2 class="box"> (d) <li>
9. 9.True or false: .big is a class selector. (a) False (b) True
10. 10.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
11. 11.True or false: .star is a class selector. (a) False (b) True
12. 12.🎯 Which element does the selector #intro style? (a) <span class="star"> (b) <div id="intro"> (c) <div id="main"> (d) <div class="intro">
13. 13.🎯 Which element does the selector li style? (a) <li class="big"> (b) <p id="hero"> (c) <span class="big"> (d) <div>
14. 14.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
15. 15.True or false: .star is an element selector. (a) True (b) False
16. 16.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) #star (b) .menu (c) .star (d) #end
17. 17.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) #intro (b) .top (c) span (d) p
18. 18.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
19. 19.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) #top (b) .big (c) .hero (d) h2
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .intro (b) #main (c) .note (d) h2
22. 22.🎯 Can many elements share the same class? (a) No (b) Yes
23. 23.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) .box (b) #intro (c) #red (d) #top
24. 24.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
25. 25.True or false: .star is an id selector. (a) True (b) False
26. 26.🎯 Which CSS selector matches this element?
    <div class="menu" id="logo">Hello</div> (a) #end (b) div (c) span (d) .logo
27. 27.True or false: #top is a class selector. (a) False (b) True
28. 28.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="note"> (c) <li id="top"> (d) <p class="note">
29. 29.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
30. 30.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) .top (b) #menu (c) #top (d) .note
31. 31.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) p (b) #main (c) .intro (d) h1
32. 32.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) #hero (b) p (c) #menu (d) .note
33. 33.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
34. 34.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p class="menu"> (c) <p id="star"> (d) <p class="star">
35. 35.True or false: #logo is a class selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) #top (b) span (c) #hero (d) .hero
37. 37.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
38. 38.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
39. 39.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) h1 (b) #top (c) .top (d) #box
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) #logo (b) h2 (c) #note (d) .note

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