CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 595 · 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 #main? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
3. 3.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
4. 4.True or false: h1 is a class selector. (a) False (b) True
5. 5.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
6. 6.True or false: p is a class selector. (a) True (b) False
7. 7.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
8. 8.True or false: p is an element selector. (a) True (b) False
9. 9.🎯 Which CSS selector matches this element?
   <span class="big" id="hero">Hello</span> (a) p (b) .red (c) #big (d) span
10. 10.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) h1 (b) .box (c) #red (d) p
11. 11.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) #menu (b) .top (c) #intro (d) #top
12. 12.True or false: #logo is an element selector. (a) True (b) False
13. 13.True or false: img is an element selector. (a) False (b) True
14. 14.🎯 Which element does the selector #hero style? (a) <p class="big"> (b) <span id="hero"> (c) <span id="top"> (d) <span class="hero">
15. 15.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
16. 16.🎯 Which element does the selector #logo style? (a) <h1 class="logo"> (b) <h1 id="end"> (c) <h2 class="box"> (d) <h1 id="logo">
17. 17.🎯 Which element does the selector li style? (a) <p id="top"> (b) <li class="big"> (c) <div> (d) <span class="big">
18. 18.True or false: body is an element selector. (a) True (b) False
19. 19.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) #main (b) h1 (c) .big (d) .red
20. 20.🎯 Which element does the selector #main style? (a) <h2 id="main"> (b) <h2 id="logo"> (c) <li class="note"> (d) <h2 class="main">
21. 21.🎯 Which element does the selector div style? (a) <div class="menu"> (b) <p class="menu"> (c) <h1 id="end"> (d) <span>
22. 22.🎯 Can many elements share the same class? (a) No (b) Yes
23. 23.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
25. 25.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
26. 26.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
27. 27.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
28. 28.True or false: img is an id selector. (a) True (b) False
29. 29.🎯 Which element does the selector #intro style? (a) <p class="red"> (b) <span id="main"> (c) <span class="intro"> (d) <span id="intro">
30. 30.🎯 Which element does the selector span style? (a) <span class="note"> (b) <p> (c) <h2 id="top"> (d) <h1 class="note">
31. 31.True or false: p is an id selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) #main (b) span (c) p (d) .red
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) li (b) .main (c) #star (d) .star
34. 34.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) .hero (b) h1 (c) .star (d) #hero
35. 35.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) #hero (b) p (c) .red (d) .end
36. 36.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
37. 37.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <div class="red"> (c) <span class="box"> (d) <div class="big">
38. 38.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) h2 (b) .box (c) .end (d) li
40. 40.🎯 Which element does the selector #top style? (a) <li id="intro"> (b) <li class="top"> (c) <div class="big"> (d) <li id="top">

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