CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 585 · 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="big" id="top">Hello</h2> (a) #intro (b) h2 (c) .top (d) li
2. 2.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
4. 4.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
5. 5.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
6. 6.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="box" id="top">Hello</h1> (a) .top (b) #intro (c) .star (d) h1
8. 8.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
9. 9.🎯 Which element does the selector .red style? (a) <h1 class="box"> (b) <h1 id="red"> (c) <h2 class="star"> (d) <h1 class="red">
10. 10.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
11. 11.True or false: h1 is an id selector. (a) True (b) False
12. 12.🎯 Which element does the selector .star style? (a) <span id="star"> (b) <p class="note"> (c) <span class="star"> (d) <span class="menu">
13. 13.True or false: .card is a class selector. (a) False (b) True
14. 14.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) #logo (b) div (c) .red (d) #big
15. 15.🎯 Which element does the selector h2 style? (a) <div class="star"> (b) <li> (c) <span id="top"> (d) <h2 class="star">
16. 16.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <p class="star"> (c) <p id="star"> (d) <h1 class="note">
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) .main (b) .menu (c) .note (d) #logo
18. 18.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
19. 19.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
20. 20.True or false: .menu is a class selector. (a) True (b) False
21. 21.🎯 Can many elements share the same class? (a) No (b) Yes
22. 22.True or false: h1 is an element selector. (a) False (b) True
23. 23.True or false: #logo is a class selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) #logo (b) .menu (c) #menu (d) .main
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .box (b) #box (c) h2 (d) #logo
26. 26.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) .red (b) #red (c) .box (d) li
28. 28.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) li (b) #logo (c) #star (d) div
29. 29.🎯 Which element does the selector .note style? (a) <h2 class="note"> (b) <h2 id="note"> (c) <h2 class="big"> (d) <li class="red">
30. 30.🎯 Which element does the selector .menu style? (a) <h1 id="menu"> (b) <h1 class="note"> (c) <h1 class="menu"> (d) <h2 class="big">
31. 31.🎯 Which CSS selector matches this element?
    <h2 class="box" id="hero">Hello</h2> (a) .box (b) .star (c) li (d) #top
32. 32.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span class="big"> (c) <span class="red"> (d) <span id="big">
33. 33.True or false: img is a class selector. (a) False (b) True
34. 34.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) #red (b) .logo (c) #end (d) .red
35. 35.True or false: #top is an id selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) .big (b) #end (c) .end (d) #note
37. 37.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) .menu (b) #menu (c) .note (d) span
38. 38.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
39. 39.🎯 Which element does the selector li style? (a) <div> (b) <li class="red"> (c) <p id="end"> (d) <span class="red">
40. 40.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <span class="box"> (c) <p> (d) <h2 id="logo">

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