CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 433 · 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 #logo? (a) an id selector (b) an element selector (c) a class selector
2. 2.🎯 Which CSS selector matches this element?
   <p class="box" id="main">Hello</p> (a) #box (b) h1 (c) #main (d) #logo
3. 3.🎯 Which element does the selector div style? (a) <div class="menu"> (b) <span> (c) <h1 id="main"> (d) <p class="menu">
4. 4.🎯 Which CSS selector matches this element?
   <div class="big" id="intro">Hello</div> (a) div (b) .intro (c) .red (d) span
5. 5.True or false: .big is an element selector. (a) False (b) True
6. 6.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
7. 7.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <span id="note"> (c) <span class="note"> (d) <p class="red">
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="box" id="hero">Hello</h1> (a) h2 (b) h1 (c) #box (d) .star
10. 10.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
11. 11.🎯 Which element does the selector #hero style? (a) <h2 class="red"> (b) <h1 class="hero"> (c) <h1 id="top"> (d) <h1 id="hero">
12. 12.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
13. 13.True or false: .card is an element selector. (a) False (b) True
14. 14.🎯 Which element does the selector li style? (a) <p id="top"> (b) <li class="box"> (c) <div> (d) <span class="box">
15. 15.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) .hero (b) .note (c) div (d) #hero
16. 16.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) h2 (b) #box (c) .logo (d) #logo
18. 18.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <li id="main"> (c) <li id="intro"> (d) <div class="menu">
19. 19.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) h1 (b) p (c) #hero (d) #note
20. 20.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
21. 21.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p class="intro"> (c) <h1 class="red"> (d) <p id="intro">
22. 22.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) #red (b) .red (c) .box (d) h1
23. 23.True or false: #end is a class selector. (a) False (b) True
24. 24.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
25. 25.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <h2 class="note"> (c) <li> (d) <div class="note">
26. 26.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) li (b) .hero (c) .red (d) #top
27. 27.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
28. 28.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <div id="end"> (c) <h2> (d) <h1 class="red">
29. 29.True or false: #top is a class selector. (a) True (b) False
30. 30.True or false: img is an element selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) .red (b) p (c) #end (d) .logo
32. 32.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
33. 33.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) p (b) .hero (c) span (d) #top
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) #star (b) .top (c) h2 (d) .star
35. 35.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) .note (b) #logo (c) .main (d) h1
38. 38.True or false: .note is a class selector. (a) False (b) True
39. 39.True or false: p is a class selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) .intro (b) h1 (c) .note (d) #intro

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