CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 264 · 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?
   <h2 class="box" id="intro">Hello</h2> (a) #box (b) #main (c) h2 (d) .intro
2. 2.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
3. 3.🎯 Which CSS selector matches this element?
   <p class="box" id="end">Hello</p> (a) #hero (b) h1 (c) .star (d) #end
4. 4.True or false: #main is an element selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="big" id="end">Hello</h1> (a) .red (b) #big (c) h2 (d) .big
6. 6.🎯 Which CSS selector matches this element?
   <li class="star" id="top">Hello</li> (a) .top (b) li (c) #star (d) .menu
7. 7.🎯 Which CSS selector matches this element?
   <span class="menu" id="end">Hello</span> (a) .note (b) #hero (c) p (d) .menu
8. 8.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
9. 9.True or false: #logo is a class selector. (a) True (b) False
10. 10.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Which element does the selector .red style? (a) <p id="red"> (b) <p class="box"> (c) <p class="red"> (d) <h1 class="star">
12. 12.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) li (b) #big (c) .logo (d) #logo
14. 14.🎯 Which element does the selector #main style? (a) <div class="big"> (b) <li id="main"> (c) <li class="main"> (d) <li id="logo">
15. 15.🎯 Can many elements share the same class? (a) No (b) Yes
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) .menu (b) .note (c) #menu (d) #end
17. 17.True or false: #logo is an id selector. (a) False (b) True
18. 18.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) li (b) #intro (c) #box (d) .star
19. 19.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
20. 20.True or false: .menu is a class selector. (a) False (b) True
21. 21.True or false: #main is an id selector. (a) True (b) False
22. 22.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 Which element does the selector #intro style? (a) <li class="note"> (b) <h2 id="intro"> (c) <h2 id="main"> (d) <h2 class="intro">
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) #red (b) .intro (c) .box (d) #intro
25. 25.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
26. 26.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span id="big"> (c) <span class="red"> (d) <span class="big">
27. 27.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
28. 28.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) h1 (b) #main (c) .menu (d) #star
29. 29.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
30. 30.True or false: .big is a class selector. (a) True (b) False
31. 31.True or false: li is an id selector. (a) False (b) True
32. 32.True or false: #top is an id selector. (a) True (b) False
33. 33.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) .top (b) h1 (c) #star (d) h2
35. 35.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) #star (b) #logo (c) #end (d) .logo
36. 36.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
37. 37.🎯 Which element does the selector li style? (a) <div> (b) <span class="menu"> (c) <li class="menu"> (d) <p id="hero">
38. 38.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
39. 39.🎯 Which element does the selector .star style? (a) <div class="note"> (b) <li class="star"> (c) <li class="menu"> (d) <li id="star">
40. 40.🎯 Which element does the selector .star style? (a) <h2 class="note"> (b) <h1 class="menu"> (c) <h1 class="star"> (d) <h1 id="star">

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