CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 518 · 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 CSS selector matches this element?
   <h1 class="note" id="hero">Hello</h1> (a) h2 (b) .hero (c) .note (d) #top
2. 2.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="note"> (c) <h2 class="note"> (d) <span id="main">
3. 3.🎯 Which element does the selector div style? (a) <h1 id="top"> (b) <div class="menu"> (c) <p class="menu"> (d) <span>
4. 4.🎯 Which CSS selector matches this element?
   <h2 class="box" id="logo">Hello</h2> (a) .logo (b) li (c) .star (d) #logo
5. 5.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
6. 6.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 Which element does the selector .box style? (a) <h2 id="box"> (b) <h2 class="star"> (c) <h2 class="box"> (d) <li class="menu">
8. 8.🎯 Which CSS selector matches this element?
   <div class="menu" id="logo">Hello</div> (a) #menu (b) span (c) #logo (d) .note
9. 9.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
10. 10.True or false: #top is an element selector. (a) True (b) False
11. 11.True or false: p is a class selector. (a) True (b) False
12. 12.True or false: p is an id selector. (a) False (b) True
13. 13.🎯 Can many elements share the same class? (a) No (b) Yes
14. 14.🎯 Which element does the selector #end style? (a) <span id="hero"> (b) <p class="star"> (c) <span id="end"> (d) <span class="end">
15. 15.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
16. 16.True or false: h1 is a class selector. (a) False (b) True
17. 17.True or false: #top is an id selector. (a) True (b) False
18. 18.🎯 Which CSS selector matches this element?
    <span class="star" id="hero">Hello</span> (a) p (b) .hero (c) #star (d) .star
19. 19.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) .note (b) .hero (c) #menu (d) .menu
20. 20.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h1 class="red"> (c) <p> (d) <h2 id="end">
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) #red (b) li (c) .box (d) #intro
22. 22.🎯 Which element does the selector span style? (a) <span class="box"> (b) <h1 class="box"> (c) <p> (d) <h2 id="intro">
23. 23.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) #intro (b) .menu (c) #menu (d) div
24. 24.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) h2 (b) .big (c) #hero (d) #top
27. 27.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="box"> (c) <h1 class="box"> (d) <div id="logo">
28. 28.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) #main (b) .star (c) p (d) span
29. 29.🎯 Which element does the selector #intro style? (a) <div id="main"> (b) <div class="intro"> (c) <span class="big"> (d) <div id="intro">
30. 30.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) #top (b) .red (c) #intro (d) #big
31. 31.True or false: li is an id selector. (a) True (b) False
32. 32.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) div (b) .star (c) #logo (d) .menu
33. 33.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
34. 34.True or false: h1 is an element selector. (a) False (b) True
35. 35.True or false: p is an element selector. (a) False (b) True
36. 36.True or false: #hero is an id selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) h2 (b) #top (c) #hero (d) .hero
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) .star (b) h2 (c) .top (d) #intro
39. 39.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) #red (b) .box (c) .red (d) div
40. 40.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector

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