CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 247 · 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 element does the selector #top style? (a) <h2 class="menu"> (b) <h1 class="top"> (c) <h1 id="intro"> (d) <h1 id="top">
2. 2.🎯 Which sign starts an id selector? (a) & (b) # (c) @ (d) .
3. 3.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
4. 4.True or false: #hero is a class selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <span class="star" id="intro">Hello</span> (a) #star (b) .intro (c) .menu (d) span
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="note" id="hero">Hello</h1> (a) #top (b) .note (c) .hero (d) .big
7. 7.True or false: #hero is an element selector. (a) False (b) True
8. 8.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
9. 9.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
10. 10.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
11. 11.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
12. 12.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
13. 13.True or false: .big is an element selector. (a) True (b) False
14. 14.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
15. 15.True or false: #main is a class selector. (a) False (b) True
16. 16.🎯 Which element does the selector #end style? (a) <h1 id="hero"> (b) <h1 class="end"> (c) <h2 class="note"> (d) <h1 id="end">
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #menu (b) #top (c) #intro (d) h2
18. 18.True or false: .note is an element selector. (a) True (b) False
19. 19.🎯 Which element does the selector #main style? (a) <p class="main"> (b) <p id="logo"> (c) <h1 class="big"> (d) <p id="main">
20. 20.🎯 Can many elements share the same class? (a) No (b) Yes
21. 21.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) #note (b) li (c) div (d) .main
22. 22.🎯 Which element does the selector h2 style? (a) <h2 class="star"> (b) <div class="star"> (c) <li> (d) <span id="logo">
23. 23.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
24. 24.🎯 Which element does the selector .box style? (a) <p class="menu"> (b) <span id="box"> (c) <span class="box"> (d) <span class="star">
25. 25.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) #box (b) #main (c) #intro (d) div
26. 26.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="note"> (c) <h2 class="note"> (d) <span id="top">
27. 27.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) #top (b) .hero (c) #hero (d) #note
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) h2 (b) .box (c) #box (d) .hero
29. 29.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) #hero (b) p (c) span (d) .end
30. 30.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
31. 31.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) .logo (b) .menu (c) #menu (d) div
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) .big (b) h2 (c) #logo (d) .main
33. 33.True or false: .card is a class selector. (a) False (b) True
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="red" id="main">Hello</h2> (a) #main (b) #red (c) li (d) .box
35. 35.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) #logo (b) #box (c) .star (d) #end
36. 36.True or false: .note is an id selector. (a) True (b) False
37. 37.🎯 Which element does the selector p style? (a) <p class="red"> (b) <li id="end"> (c) <h1> (d) <h2 class="red">
38. 38.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) div (b) .box (c) span (d) #logo
39. 39.True or false: #logo is a class selector. (a) True (b) False
40. 40.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="menu"> (c) <p class="menu"> (d) <li id="logo">

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