CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 646 · 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.True or false: body is an element selector. (a) False (b) True
2. 2.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
3. 3.🎯 Which element does the selector #logo style? (a) <h1 id="end"> (b) <h1 class="logo"> (c) <h2 class="big"> (d) <h1 id="logo">
4. 4.🎯 Can many elements share the same class? (a) No (b) Yes
5. 5.🎯 Which CSS selector matches this element?
   <li class="star" id="logo">Hello</li> (a) #logo (b) .logo (c) .menu (d) #star
6. 6.True or false: .big is a class selector. (a) True (b) False
7. 7.True or false: #main is an id selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="note" id="top">Hello</h2> (a) #note (b) .note (c) li (d) .top
9. 9.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
10. 10.🎯 Which element does the selector #intro style? (a) <span class="intro"> (b) <p class="note"> (c) <span id="main"> (d) <span id="intro">
11. 11.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) div (b) .box (c) .hero (d) li
12. 12.True or false: .note is a class selector. (a) False (b) True
13. 13.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
14. 14.True or false: #logo is an id selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) li (b) #top (c) .note (d) .top
16. 16.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="menu"> (c) <span class="menu"> (d) <h2 id="logo">
18. 18.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 Which element does the selector p style? (a) <li id="main"> (b) <p class="star"> (c) <h2 class="star"> (d) <h1>
20. 20.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
21. 21.True or false: img is an id selector. (a) True (b) False
22. 22.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="intro"> (c) <span class="star"> (d) <h1 class="star">
23. 23.True or false: #hero is an id selector. (a) False (b) True
24. 24.🎯 Which element does the selector .star style? (a) <div class="menu"> (b) <div id="star"> (c) <span class="note"> (d) <div class="star">
25. 25.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) .red (b) p (c) span (d) #end
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .intro (b) li (c) #note (d) #intro
27. 27.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
28. 28.True or false: #top is a class selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) #end (b) #note (c) .end (d) li
30. 30.🎯 Which CSS selector matches this element?
    <div class="menu" id="logo">Hello</div> (a) div (b) .logo (c) .note (d) #end
31. 31.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
32. 32.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
33. 33.True or false: .menu is a class selector. (a) False (b) True
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) #box (b) .star (c) #end (d) h2
35. 35.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
36. 36.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) .note (b) #intro (c) div (d) .top
37. 37.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <h1> (c) <p class="menu"> (d) <li id="main">
38. 38.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) .red (b) #red (c) .box (d) .intro
39. 39.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
40. 40.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector

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