CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 642 · 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 CSS selector matches this element?
   <h2 class="big" id="intro">Hello</h2> (a) li (b) .intro (c) .big (d) .red
2. 2.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
3. 3.True or false: body is an id selector. (a) False (b) True
4. 4.True or false: li is an element selector. (a) False (b) True
5. 5.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
6. 6.True or false: img is an element selector. (a) True (b) False
7. 7.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
8. 8.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
9. 9.🎯 Which element does the selector .star style? (a) <div class="menu"> (b) <div class="star"> (c) <div id="star"> (d) <span class="note">
10. 10.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <div class="big"> (c) <li id="top"> (d) <li id="intro">
11. 11.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
12. 12.True or false: .big is an element selector. (a) True (b) False
13. 13.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <p class="red"> (c) <p class="big"> (d) <h1 class="box">
14. 14.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) .hero (b) p (c) .red (d) h1
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .intro (b) #note (c) .big (d) #intro
16. 16.True or false: p is a class selector. (a) True (b) False
17. 17.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
18. 18.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
19. 19.True or false: .card is a class selector. (a) True (b) False
20. 20.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
21. 21.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="logo"> (c) <h2 class="menu"> (d) <h1 id="main">
22. 22.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="hero"> (c) <h1 class="menu"> (d) <span class="menu">
23. 23.🎯 Which element does the selector #logo style? (a) <div id="end"> (b) <div id="logo"> (c) <div class="logo"> (d) <span class="big">
24. 24.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 Which element does the selector #hero style? (a) <span class="hero"> (b) <span id="top"> (c) <p class="red"> (d) <span id="hero">
26. 26.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) #end (b) .logo (c) li (d) #star
27. 27.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #red (b) div (c) span (d) #main
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) h2 (b) .logo (c) #star (d) li
29. 29.🎯 Can many elements share the same class? (a) No (b) Yes
30. 30.True or false: .big is an id selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) #intro (b) span (c) p (d) .box
32. 32.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #box (b) .top (c) .box (d) h1
33. 33.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) #star (b) #intro (c) .top (d) #top
34. 34.True or false: img is an id selector. (a) False (b) True
35. 35.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
36. 36.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) div (b) .intro (c) .box (d) #box
37. 37.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <span id="main"> (c) <li> (d) <div class="menu">
38. 38.True or false: .card is an id selector. (a) True (b) False
39. 39.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="logo"> (c) <h1 class="box"> (d) <li class="box">
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) .intro (b) h2 (c) h1 (d) #big

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