CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 726 · 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 element does the selector #hero style? (a) <p class="star"> (b) <span id="top"> (c) <span class="hero"> (d) <span id="hero">
2. 2.True or false: body is a class selector. (a) True (b) False
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="box" id="intro">Hello</h2> (a) .star (b) li (c) .intro (d) .box
4. 4.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
5. 5.True or false: .star is an id selector. (a) True (b) False
6. 6.🎯 Can many elements share the same class? (a) No (b) Yes
7. 7.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h1 class="top"> (c) <h1 id="top"> (d) <h2 class="star">
8. 8.True or false: img is an element selector. (a) True (b) False
9. 9.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
10. 10.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which element does the selector .menu style? (a) <h2 class="note"> (b) <h2 class="menu"> (c) <h2 id="menu"> (d) <li class="big">
12. 12.🎯 Which element does the selector li style? (a) <div> (b) <li class="big"> (c) <span class="big"> (d) <p id="intro">
13. 13.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
14. 14.True or false: #logo is an id selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) #intro (b) .intro (c) #main (d) div
16. 16.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) #top (b) .menu (c) p (d) .note
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #intro (b) h1 (c) .note (d) .top
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) #main (b) #intro (c) .intro (d) .note
19. 19.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
20. 20.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
21. 21.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) #hero (b) #note (c) span (d) #top
22. 22.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
23. 23.🎯 Which element does the selector .star style? (a) <div class="star"> (b) <div id="star"> (c) <div class="menu"> (d) <span class="note">
24. 24.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
26. 26.True or false: .menu is an id selector. (a) True (b) False
27. 27.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #box (b) .star (c) #logo (d) h1
28. 28.True or false: #logo is a class selector. (a) True (b) False
29. 29.🎯 Which element does the selector li style? (a) <div> (b) <li class="menu"> (c) <p id="logo"> (d) <span class="menu">
30. 30.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
31. 31.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
32. 32.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) div (b) .menu (c) #star (d) #hero
33. 33.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) .box (b) #top (c) #intro (d) span
34. 34.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
35. 35.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) .logo (b) .note (c) .big (d) #end
36. 36.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) div (b) #intro (c) #red (d) .intro
37. 37.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
38. 38.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
39. 39.🎯 Which element does the selector span style? (a) <h2 id="logo"> (b) <span class="note"> (c) <p> (d) <h1 class="note">
40. 40.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector

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