CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 611 · 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 element selector (b) an id selector (c) a class selector
2. 2.🎯 Which element does the selector #intro style? (a) <h1 id="intro"> (b) <h1 id="main"> (c) <h2 class="big"> (d) <h1 class="intro">
3. 3.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
4. 4.🎯 Which CSS selector matches this element?
   <p class="star" id="intro">Hello</p> (a) #star (b) h1 (c) .intro (d) #intro
5. 5.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
6. 6.🎯 Which element does the selector .note style? (a) <li class="big"> (b) <li class="note"> (c) <li id="note"> (d) <div class="red">
7. 7.🎯 Which CSS selector matches this element?
   <li class="menu" id="intro">Hello</li> (a) div (b) .intro (c) #main (d) .menu
8. 8.🎯 Which element does the selector li style? (a) <li class="box"> (b) <div> (c) <p id="intro"> (d) <span class="box">
9. 9.🎯 Which element does the selector #logo style? (a) <h1 id="end"> (b) <h1 id="logo"> (c) <h2 class="box"> (d) <h1 class="logo">
10. 10.True or false: body is an id selector. (a) True (b) False
11. 11.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) span (b) #star (c) .star (d) .menu
12. 12.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) .main (b) #red (c) span (d) #logo
13. 13.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
14. 14.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="red"> (c) <span id="intro"> (d) <h2 class="red">
15. 15.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) h2 (b) .box (c) .red (d) #red
17. 17.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
18. 18.🎯 Can many elements share the same class? (a) Yes (b) No
19. 19.🎯 Which element does the selector .note style? (a) <span class="red"> (b) <div class="big"> (c) <div id="note"> (d) <div class="note">
20. 20.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
21. 21.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) li (b) .logo (c) #logo (d) .box
24. 24.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 2 (d) 1
26. 26.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) span (b) #intro (c) .top (d) div
27. 27.True or false: body is an element selector. (a) False (b) True
28. 28.🎯 Which element does the selector div style? (a) <span> (b) <div class="star"> (c) <p class="star"> (d) <h1 id="intro">
29. 29.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) .logo (b) div (c) #end (d) #big
30. 30.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
31. 31.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) h2 (b) #main (c) #red (d) .box
33. 33.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
34. 34.🎯 Which element does the selector #hero style? (a) <div class="star"> (b) <li id="hero"> (c) <li id="top"> (d) <li class="hero">
35. 35.True or false: p is an id selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) #red (b) .box (c) .red (d) .hero
37. 37.🎯 Which element does the selector #hero style? (a) <div class="hero"> (b) <span class="box"> (c) <div id="top"> (d) <div id="hero">
38. 38.🎯 Which element does the selector #hero style? (a) <p id="hero"> (b) <p class="hero"> (c) <h1 class="big"> (d) <p id="top">
39. 39.🎯 Which element does the selector #top style? (a) <div id="intro"> (b) <span class="red"> (c) <div id="top"> (d) <div class="top">
40. 40.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) .intro (b) #intro (c) p (d) .star

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