CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 619 · 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 h1? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 Which element does the selector .red style? (a) <span class="red"> (b) <p class="star"> (c) <span id="red"> (d) <span class="box">
3. 3.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="big" id="logo">Hello</h1> (a) .logo (b) h2 (c) .big (d) #big
5. 5.🎯 What kind of selector is img? (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 sign starts an id selector? (a) . (b) & (c) # (d) @
8. 8.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="red" id="hero">Hello</h1> (a) #red (b) h2 (c) .red (d) #top
10. 10.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h1 class="hero"> (c) <h2 class="note"> (d) <h1 id="top">
11. 11.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
12. 12.True or false: #logo is a class selector. (a) True (b) False
13. 13.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <h1 class="box"> (c) <p class="big"> (d) <p class="red">
14. 14.True or false: .star is an id selector. (a) False (b) True
15. 15.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <p class="menu"> (c) <h1> (d) <h2 class="menu">
16. 16.True or false: .card is a class selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) .top (b) .box (c) #box (d) .star
18. 18.🎯 Which element does the selector #hero style? (a) <div class="hero"> (b) <span class="big"> (c) <div id="top"> (d) <div id="hero">
19. 19.🎯 Which element does the selector li style? (a) <div> (b) <span class="menu"> (c) <li class="menu"> (d) <p id="top">
20. 20.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
21. 21.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) .main (b) .box (c) h1 (d) #box
22. 22.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) #box (b) div (c) #end (d) #logo
23. 23.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) h1 (b) #hero (c) .end (d) p
24. 24.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
25. 25.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #logo (b) #menu (c) div (d) #main
26. 26.True or false: #end is an id selector. (a) True (b) False
27. 27.True or false: .note is a class selector. (a) True (b) False
28. 28.True or false: .big is a class selector. (a) False (b) True
29. 29.🎯 Can many elements share the same class? (a) No (b) Yes
30. 30.🎯 Which element does the selector #intro style? (a) <div id="main"> (b) <div class="intro"> (c) <span class="box"> (d) <div id="intro">
31. 31.True or false: #end is a class selector. (a) False (b) True
32. 32.True or false: #main is an id selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) #red (b) #main (c) .box (d) #logo
34. 34.True or false: #top is an id selector. (a) True (b) False
35. 35.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <h1> (c) <p class="box"> (d) <li id="intro">
36. 36.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
37. 37.🎯 Which element does the selector #logo style? (a) <span class="star"> (b) <div id="logo"> (c) <div class="logo"> (d) <div id="end">
38. 38.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <h2 id="red"> (c) <h2 class="box"> (d) <li class="star">
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) .big (b) .end (c) h2 (d) #end
40. 40.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) p (b) h1 (c) .main (d) #big

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