CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 936 · 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 sign starts a class selector? (a) # (b) . (c) & (d) @
2. 2.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 Can many elements share the same class? (a) No (b) Yes
4. 4.🎯 Which element does the selector #intro style? (a) <div class="note"> (b) <li class="intro"> (c) <li id="intro"> (d) <li id="main">
5. 5.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <li> (c) <span id="end"> (d) <h2 class="red">
6. 6.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
7. 7.True or false: h1 is an element selector. (a) False (b) True
8. 8.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="star" id="intro">Hello</h1> (a) .menu (b) #main (c) .star (d) .intro
10. 10.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
11. 11.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) .end (b) #hero (c) .red (d) p
12. 12.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) div (b) .big (c) .red (d) #big
13. 13.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) #big (b) .red (c) p (d) span
14. 14.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) h1 (b) #logo (c) #big (d) .big
15. 15.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) #logo (b) div (c) .main (d) #menu
16. 16.True or false: .star is a class selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) li (b) .big (c) .red (d) #logo
18. 18.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
19. 19.True or false: p is an element selector. (a) True (b) False
20. 20.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
21. 21.True or false: #main is an element selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) .top (b) p (c) #intro (d) .star
23. 23.🎯 Which element does the selector .note style? (a) <div class="note"> (b) <div class="big"> (c) <div id="note"> (d) <span class="red">
24. 24.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="end"> (c) <div class="note"> (d) <li id="logo">
25. 25.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) .red (b) .big (c) #end (d) .logo
26. 26.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
27. 27.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p class="intro"> (c) <p id="intro"> (d) <h1 class="red">
28. 28.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <div class="red"> (c) <span> (d) <p class="red">
29. 29.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) #box (b) #end (c) .logo (d) h2
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) h2 (b) .end (c) #big (d) .big
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) #note (b) li (c) #top (d) h2
33. 33.🎯 Which element does the selector #main style? (a) <div class="star"> (b) <li id="main"> (c) <li class="main"> (d) <li id="logo">
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) li (b) #big (c) #end (d) .big
35. 35.True or false: p is an id selector. (a) False (b) True
36. 36.True or false: body is a class selector. (a) False (b) True
37. 37.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
38. 38.True or false: .big is an element selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) h1 (b) h2 (c) #end (d) .big
40. 40.True or false: h1 is a class selector. (a) True (b) False

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