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---
id: 6148e161ecec9511941f8833
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title: Step 64
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challengeType: 0
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dashedName: step-64
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---
# --description--
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Adesso non possiamo leggere il testo. Seleziona l'elemento `footer` e l'elemento di ancoraggio al suo interno per impostare il carattere su un colore di un adeguato rapporto di contrasto.
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# --hints--
Dovresti utilizzare il selettore `footer, footer a` .
```js
const gs = (s) => new __helpers.CSSHelp(document).getStyle(s);
assert.exists(gs('footer, footer a') || gs('footer a, footer'));
```
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Dovresti impostare la proprietà `color` su un valore con un rapporto di contrasto di almeno `7:1` . _Suggerimento: potresti usare `#dfdfe2`_
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```js
function luminance(r, g, b) {
const a = [r, g, b].map((v) => {
v /= 255;
return v < = 0.03928 ? v / 12.92 : Math.pow( (v + 0.055) / 1.055, 2.4 );
});
return a[0] * 0.2126 + a[1] * 0.7152 + a[2] * 0.0722;
}
function contrast(rgb1, rgb2) {
const lum1 = luminance(rgb1[0], rgb1[1], rgb1[2]);
const lum2 = luminance(rgb2[0], rgb2[1], rgb2[2]);
const brightest = Math.max(lum1, lum2);
const darkest = Math.min(lum1, lum2);
return (brightest + 0.05)
/ (darkest + 0.05);
}
const backgroundColour = [42, 42, 64];
const foot = getComputedStyle(document.querySelector('footer'))?.color;
const a = getComputedStyle(document.querySelector('footer a'))?.color;
const rgbFoot = foot?.match(/(\d+),\s(\d+),\s(\d+)/);
const rgbA = a?.match(/(\d+),\s(\d+),\s(\d+)/);
const footColour = [rgbFoot[1], rgbFoot[2], rgbFoot[3]];
const aColour = [rgbA[1], rgbA[2], rgbA[3]];
assert.isAtLeast(contrast(backgroundColour, footColour), 7);
assert.isAtLeast(contrast(backgroundColour, aColour), 7);
```
# --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;
}
section {
width: 80%;
margin: 0 auto 10px auto;
max-width: 600px;
}
h1,
h2 {
font-family: Verdana, Tahoma;
}
h2 {
border-bottom: 4px solid #dfdfe2 ;
margin-top: 0px;
padding-top: 60px;
}
.info {
padding: 10px 0 0 5px;
}
.formrow {
margin-top: 30px;
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padding: 0px 15px;
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}
input {
font-size: 16px;
}
.info label, .info input {
display: inline-block;
}
.info input {
width: 50%;
text-align: left;
}
.info label {
width: 10%;
min-width: 55px;
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text-align: right;
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}
.question-block {
text-align: left;
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display: block;
width: 100%;
margin-top: 20px;
padding-top: 5px;
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}
p {
margin-top: 5px;
padding-left: 15px;
font-size: 20px;
}
p::before {
content: "Question #";
}
.question {
border: none;
padding-bottom: 0;
}
.answers-list {
list-style: none;
padding: 0;
}
button {
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display: block;
margin: 40px auto;
width: 40%;
padding: 15px;
font-size: 23px;
background: #d0d0d5 ;
border: 3px solid #3b3b4f ;
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}
footer {
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background-color: #2a2a40 ;
display: flex;
justify-content: center;
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}
--fcc-editable-region--
--fcc-editable-region--
.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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}
```
