CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 326 · 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 #hero? (a) an id selector (b) an element selector (c) a class selector
2. 2.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 Which CSS selector matches this element?
   <span class="note" id="intro">Hello</span> (a) #note (b) p (c) span (d) .intro
4. 4.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
5. 5.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
6. 6.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
7. 7.🎯 Which element does the selector #main style? (a) <li id="logo"> (b) <div class="red"> (c) <li id="main"> (d) <li class="main">
8. 8.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
9. 9.True or false: .note is a class selector. (a) True (b) False
10. 10.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <li class="star"> (c) <li id="star"> (d) <div class="note">
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) .big (b) .top (c) #note (d) h1
12. 12.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) p (b) .big (c) #note (d) .hero
13. 13.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
14. 14.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
15. 15.🎯 Which element does the selector #hero style? (a) <h2 id="top"> (b) <h2 class="hero"> (c) <h2 id="hero"> (d) <li class="menu">
16. 16.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 Which element does the selector #top style? (a) <h2 id="intro"> (b) <li class="big"> (c) <h2 class="top"> (d) <h2 id="top">
18. 18.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
19. 19.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) .menu (b) .intro (c) #intro (d) div
21. 21.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="star"> (c) <h2 id="intro"> (d) <span class="star">
22. 22.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
23. 23.🎯 Which element does the selector #logo style? (a) <div class="box"> (b) <li id="logo"> (c) <li class="logo"> (d) <li id="end">
24. 24.🎯 Can many elements share the same class? (a) Yes (b) No
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2> (a) #menu (b) .menu (c) #top (d) li
26. 26.True or false: #top is a class selector. (a) True (b) False
27. 27.🎯 Which element does the selector #logo style? (a) <span id="end"> (b) <p class="menu"> (c) <span class="logo"> (d) <span id="logo">
28. 28.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) #main (b) .star (c) h1 (d) p
29. 29.🎯 Which element does the selector #intro style? (a) <li id="main"> (b) <div class="box"> (c) <li class="intro"> (d) <li id="intro">
30. 30.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
31. 31.True or false: .star is a class selector. (a) False (b) True
32. 32.True or false: .big is a class selector. (a) False (b) True
33. 33.True or false: #end is an id selector. (a) True (b) False
34. 34.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <span> (c) <div class="big"> (d) <p class="big">
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) .red (b) #big (c) h2 (d) li
36. 36.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) #box (b) div (c) .top (d) span
37. 37.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) #logo (b) div (c) .main (d) li
38. 38.🎯 Which element does the selector #intro style? (a) <span class="big"> (b) <div id="intro"> (c) <div id="main"> (d) <div class="intro">
39. 39.🎯 Which CSS selector matches this element?
    <span class="star" id="end">Hello</span> (a) .star (b) #hero (c) .menu (d) #star
40. 40.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) p (b) .star (c) .end (d) #box

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