CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 629 · 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.🎯 Can many elements share the same class? (a) Yes (b) No
2. 2.🎯 Which element does the selector #end style? (a) <h1 id="hero"> (b) <h2 class="big"> (c) <h1 class="end"> (d) <h1 id="end">
3. 3.🎯 Which CSS selector matches this element?
   <p class="menu" id="end">Hello</p> (a) #hero (b) #menu (c) .note (d) p
4. 4.True or false: #end is a class selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <div class="star" id="intro">Hello</div> (a) span (b) .intro (c) #main (d) div
6. 6.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="big" id="intro">Hello</h2> (a) #main (b) h2 (c) #big (d) .red
8. 8.True or false: .card is an element selector. (a) False (b) True
9. 9.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
10. 10.True or false: .note is an element selector. (a) False (b) True
11. 11.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
12. 12.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) #end (b) div (c) #note (d) #logo
13. 13.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) span (b) #box (c) .box (d) #main
14. 14.🎯 Which element does the selector #intro style? (a) <div class="intro"> (b) <div id="main"> (c) <span class="star"> (d) <div id="intro">
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) .hero (b) #top (c) #hero (d) .star
16. 16.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) #note (b) .big (c) h1 (d) .end
18. 18.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
19. 19.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
20. 20.True or false: h1 is an element selector. (a) True (b) False
21. 21.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h2 class="note"> (c) <h1 class="main"> (d) <h1 id="logo">
22. 22.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
23. 23.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <h1> (c) <li id="logo"> (d) <p class="menu">
24. 24.🎯 Which element does the selector #intro style? (a) <li class="star"> (b) <h2 id="main"> (c) <h2 class="intro"> (d) <h2 id="intro">
25. 25.True or false: #hero is an element selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) #note (b) .top (c) span (d) div
27. 27.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) li (b) div (c) #end (d) .logo
28. 28.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <li id="intro"> (c) <div class="red"> (d) <li id="top">
29. 29.🎯 Which element does the selector .star style? (a) <span class="note"> (b) <div id="star"> (c) <div class="star"> (d) <div class="menu">
30. 30.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) .main (b) div (c) #logo (d) li
31. 31.True or false: li is a class selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) #logo (b) #box (c) .box (d) .main
33. 33.True or false: #hero is an id selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) #box (b) #hero (c) .star (d) #end
35. 35.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) div (b) .menu (c) #star (d) .star
36. 36.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
37. 37.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) #red (b) .box (c) .intro (d) span
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) .logo (b) #star (c) h2 (d) #end
39. 39.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) .top (b) #red (c) #intro (d) span
40. 40.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="logo"> (c) <span class="note"> (d) <h1 class="note">

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