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---
id: 61487f703571b60899055cf9
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title: Step 51
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challengeType: 0
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dashedName: step-51
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---
# --description--
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Imposta la larghezza degli elementi `section` all'`80%` del valore dell'elemento genitore. Poi, usa i margini per centrare gli elementi `section` , aggiungendo `10px` al margine inferiore.
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Inoltre, assicurati che gli elementi `section` non possano essere più larghi di `600px` .
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# --hints--
Dovresti usare un selettore `section` .
```js
assert.exists(new __helpers.CSSHelp(document).getStyle('section'));
```
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Dovresti dare all'elemento `section` una proprietà `width` dell'`80%`.
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```js
assert.equal(new __helpers.CSSHelp(document).getStyle('section')?.width, '80%');
```
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Dovresti dare all'elemento `section` una proprietà `margin-top` con il valore `0` .
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```js
assert.equal(new __helpers.CSSHelp(document).getStyle('section')?.marginTop, '0px');
```
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Dovresti dare all'elemento `section` una proprietà `margin-right` con il valore `auto` .
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```js
assert.equal(new __helpers.CSSHelp(document).getStyle('section')?.marginRight, 'auto');
```
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Dovresti dare all'elemento `section` una proprietà `margin-bottom` con il valore `10px` .
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```js
assert.equal(new __helpers.CSSHelp(document).getStyle('section')?.marginBottom, '10px');
```
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Dovresti dare all'elemento `section` una proprietà `margin-left` con il valore `auto` .
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```js
assert.equal(new __helpers.CSSHelp(document).getStyle('section')?.marginLeft, 'auto');
```
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Dovresti dare all'elemento `section` una proprietà `max-width` con il valore `600px` .
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```js
assert.equal(new __helpers.CSSHelp(document).getStyle('section')?.maxWidth, '600px');
```
# --seed--
## --seed-contents--
```html
<!DOCTYPE html>
< html lang = "en" >
< head >
< meta charset = "UTF-8" / >
< meta name = "viewport" content = "width=device-width, initial-scale=1.0" / >
< meta name = "description" content = "freeCodeCamp Accessibility Quiz practice project" / >
< title > Accessibility Quiz< / title >
< link rel = "stylesheet" href = "styles.css" / >
< / head >
< body >
< header >
< img id = "logo" src = "https://cdn.freecodecamp.org/platform/universal/fcc_primary.svg" >
< h1 > HTML/CSS Quiz< / h1 >
< nav >
< ul >
< li > < a href = "#student-info" > INFO< / a > < / li >
< li > < a href = "#html-questions" > HTML< / a > < / li >
< li > < a href = "#css-questions" > CSS< / a > < / li >
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< / ul >
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< / nav >
< / header >
< main >
< form method = "post" action = "https://freecodecamp.org/practice-project/accessibility-quiz" >
< section role = "region" aria-labelledby = "student-info" >
< h2 id = "student-info" > Student Info< / h2 >
< div class = "info" >
< label for = "student-name" > Name:< / label >
< input type = "text" name = "student-name" id = "student-name" / >
< / div >
< div class = "info" >
< label for = "student-email" > Email:< / label >
< input type = "email" name = "student-email" id = "student-email" / >
< / div >
< div class = "info" >
< label for = "birth-date" > D.O.B.< span class = "sr-only" > (Date of Birth)< / span > < / label >
< input type = "date" name = "birth-date" id = "birth-date" / >
< / div >
< / section >
< section role = "region" aria-labelledby = "html-questions" >
< h2 id = "html-questions" > HTML< / h2 >
< div class = "question-block" >
< p > 1< / p >
< fieldset class = "question" name = "html-question-one" >
< legend >
The legend element represents a caption for the content of its
parent fieldset element
< / legend >
< ul class = "answers-list" >
< li >
< label for = "q1-a1" >
< input type = "radio" id = "q1-a1" name = "q1" value = "true" / >
True
< / label >
< / li >
< li >
< label for = "q1-a2" >
< input type = "radio" id = "q1-a2" name = "q1" value = "false" / >
False
< / label >
< / li >
< / ul >
< / fieldset >
< / div >
< div class = "question-block" >
< p > 2< / p >
< fieldset class = "question" name = "html-question-two" >
< legend >
A label element nesting an input element is required to have a
for attribute with the same value as the input's id
< / legend >
< ul class = "answers-list" >
< li >
< label for = "q2-a1" >
< input type = "radio" id = "q2-a1" name = "q2" value = "true" / >
True
< / label >
< / li >
< li >
< label for = "q2-a2" >
< input type = "radio" id = "q2-a2" name = "q2" value = "false" / >
False
< / label >
< / li >
< / ul >
< / fieldset >
< / div >
< / section >
< section role = "region" aria-labelledby = "css-questions" >
< h2 id = "css-questions" > CSS< / h2 >
< div class = "formrow" >
< div class = "question-block" >
< label for = "customer" > Are you a frontend developer?< / label >
< / div >
< div class = "answer" >
< select name = "customer" id = "customer" required >
< option value = "" > Select an option< / option >
< option value = "yes" > Yes< / option >
< option value = "no" > No< / option >
< / select >
< / div >
< div class = "question-block" >
< label for = "css-questions" > Do you have any questions:< / label >
< / div >
< div class = "answer" >
< textarea id = "css-questions" name = "css-questions" rows = "5" cols = "24" placeholder = "Who is flexbox..." > < / textarea >
< / div >
< / div >
< / section >
< button type = "submit" > Submit< / button >
< / form >
< / main >
< footer >
< address >
< a href = "https://freecodecamp.org" > freeCodeCamp< / a > < br / >
San Francisco< br / >
California< br / >
USA
< / address >
< / footer >
< / body >
< / html >
```
```css
body {
background: #f5f6f7 ;
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color: #1b1b32 ;
font-family: Helvetica;
margin: 0;
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}
header {
width: 100%;
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height: 50px;
background-color: #1b1b32 ;
display: flex;
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justify-content: space-between;
align-items: center;
position: fixed;
top: 0;
}
#logo {
width: max(100px, 18vw);
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background-color: #0a0a23 ;
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aspect-ratio: 35 / 4;
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padding: 0.4rem;
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}
h1 {
color: #f1be32 ;
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font-size: min(5vw, 1.2em);
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text-align: center;
}
nav {
width: 50%;
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max-width: 300px;
height: 50px;
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}
nav > ul {
display: flex;
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justify-content: space-evenly;
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flex-wrap: wrap;
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align-items: center;
padding-inline-start: 0;
margin-block: 0;
height: 100%;
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}
nav > ul > li {
color: #dfdfe2 ;
margin: 0 0.2rem;
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padding: 0.2rem;
display: block;
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}
nav > ul > li:hover {
background-color: #dfdfe2 ;
color: #1b1b32 ;
cursor: pointer;
}
li > a {
color: inherit;
text-decoration: none;
}
main {
padding-top: 50px;
}
--fcc-editable-region--
--fcc-editable-region--
h1,
h2 {
font-family: Verdana, Tahoma;
}
h2 {
border-bottom: 4px solid #dfdfe2 ;
}
p::before {
content: "Question #";
}
.sr-only {
position: absolute;
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width: 1px;
height: 1px;
padding: 0;
margin: -1px;
overflow: hidden;
clip: rect(0, 0, 0, 0);
white-space: nowrap;
border: 0;
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}
```
