CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 403 · 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 sign starts a class selector? (a) . (b) # (c) & (d) @
2. 2.🎯 Which CSS selector matches this element?
   <div class="red" id="top">Hello</div> (a) #top (b) .box (c) #intro (d) #red
3. 3.True or false: .note is a class selector. (a) True (b) False
4. 4.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
5. 5.🎯 Which element does the selector div style? (a) <div class="note"> (b) <h1 id="hero"> (c) <p class="note"> (d) <span>
6. 6.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
7. 7.🎯 Which CSS selector matches this element?
   <span class="menu" id="main">Hello</span> (a) #logo (b) p (c) #main (d) .main
8. 8.🎯 Which element does the selector .note style? (a) <p class="red"> (b) <span class="big"> (c) <span id="note"> (d) <span class="note">
9. 9.True or false: #main is an id selector. (a) False (b) True
10. 10.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) div (b) span (c) #intro (d) .star
11. 11.🎯 Which element does the selector div style? (a) <span> (b) <p class="box"> (c) <div class="box"> (d) <h1 id="end">
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) .box (b) #box (c) li (d) .logo
13. 13.True or false: .card is an element selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) .star (b) #main (c) .box (d) li
15. 15.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <li class="note"> (c) <h2 id="logo"> (d) <h2 id="end">
16. 16.🎯 Which element does the selector span style? (a) <h2 id="main"> (b) <p> (c) <h1 class="menu"> (d) <span class="menu">
17. 17.🎯 Which element does the selector p style? (a) <p class="star"> (b) <h1> (c) <h2 class="star"> (d) <li id="hero">
18. 18.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
19. 19.True or false: #main is a class selector. (a) False (b) True
20. 20.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
21. 21.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) #top (b) .box (c) .hero (d) #hero
22. 22.🎯 Can many elements share the same class? (a) Yes (b) No
23. 23.True or false: #end is a class selector. (a) True (b) False
24. 24.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="star"> (c) <div id="top"> (d) <h1 class="star">
25. 25.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li id="note"> (c) <li class="big"> (d) <li class="note">
26. 26.🎯 Which element does the selector .big style? (a) <li class="red"> (b) <div class="box"> (c) <li id="big"> (d) <li class="big">
27. 27.True or false: #logo is an element selector. (a) False (b) True
28. 28.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
29. 29.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <div class="menu"> (c) <li> (d) <h2 class="menu">
30. 30.True or false: h1 is an id selector. (a) True (b) False
31. 31.🎯 Which element does the selector .star style? (a) <h2 class="note"> (b) <h1 class="menu"> (c) <h1 class="star"> (d) <h1 id="star">
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) #hero (b) .end (c) .box (d) .star
33. 33.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
34. 34.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
35. 35.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <span id="star"> (c) <span class="star"> (d) <p class="note">
36. 36.True or false: .big is a class selector. (a) True (b) False
37. 37.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
38. 38.True or false: #top is a class selector. (a) False (b) True
39. 39.True or false: .menu is an element selector. (a) True (b) False
40. 40.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector

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