CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 175 · 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.True or false: #top is an id selector. (a) True (b) False
3. 3.🎯 Which element does the selector div style? (a) <span> (b) <div class="star"> (c) <h1 id="end"> (d) <p class="star">
4. 4.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="end"> (c) <h1 class="box"> (d) <li class="box">
5. 5.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="intro"> (c) <h2 class="star"> (d) <h1 id="top">
6. 6.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
7. 7.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <div id="end"> (c) <span class="box"> (d) <div class="end">
8. 8.🎯 Which CSS selector matches this element?
   <p class="note" id="main">Hello</p> (a) h1 (b) p (c) .big (d) .main
9. 9.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
10. 10.True or false: p is a class selector. (a) False (b) True
11. 11.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
12. 12.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
13. 13.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) p (b) #box (c) .box (d) .intro
14. 14.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) #menu (b) .main (c) #main (d) h1
15. 15.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) h1 (b) .intro (c) #main (d) #intro
16. 16.🎯 Which element does the selector span style? (a) <h2 id="logo"> (b) <p> (c) <span class="big"> (d) <h1 class="big">
17. 17.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) h1 (b) .menu (c) .hero (d) #star
19. 19.🎯 Which CSS selector matches this element?
    <li class="box" id="hero">Hello</li> (a) .box (b) .star (c) #top (d) div
20. 20.True or false: #hero is an element selector. (a) True (b) False
21. 21.True or false: h1 is a class selector. (a) False (b) True
22. 22.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
23. 23.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) div (b) .top (c) span (d) .menu
24. 24.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) .main (b) #note (c) #logo (d) span
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2> (a) #menu (b) li (c) .menu (d) .note
26. 26.True or false: #hero is an id selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) .red (b) span (c) div (d) #big
28. 28.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
29. 29.🎯 Which element does the selector p style? (a) <p class="red"> (b) <h1> (c) <h2 class="red"> (d) <li id="main">
30. 30.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <span class="star"> (c) <p class="note"> (d) <span id="star">
31. 31.🎯 Which element does the selector #top style? (a) <h1 class="big"> (b) <p id="top"> (c) <p class="top"> (d) <p id="intro">
32. 32.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) h1 (b) .box (c) #main (d) p
33. 33.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) .box (b) #hero (c) #red (d) div
34. 34.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) #logo (b) #box (c) #main (d) h2
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) h1 (b) #box (c) .star (d) h2
37. 37.🎯 Can many elements share the same class? (a) No (b) Yes
38. 38.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
39. 39.🎯 Which element does the selector h2 style? (a) <h2 class="box"> (b) <li> (c) <div class="box"> (d) <span id="main">
40. 40.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <h1> (c) <h2 class="star"> (d) <p class="star">

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