freeCodeCamp/curriculum/challenges/italian/14-responsive-web-design-22/learn-css-flexbox-by-buildi.../6153a3952facd25a83fe8083.md

2.9 KiB

id title challengeType dashedName
6153a3952facd25a83fe8083 Step 20 0 step-20

--description--

Crea una media query per schermi di larghezza inferiore a 800px. Al suo interno, crea una regola #gallery img e imposta la proprietà width sul 50%. In questo modo, convertirai la tua galleria in un layout a due colonne.

--hints--

Dovresti aggiungere una nuova @media query.

assert(new __helpers.CSSHelp(document).getCSSRules('media')?.length === 1);

La nuova @media query dovrebbe avere una proprietà max-width con il valore 800px.

assert(new __helpers.CSSHelp(document).getCSSRules('media')?.[0]?.media?.mediaText === '(max-width: 800px)');

La @media query dovrebbe avere una regola #gallery img.

const rules = new __helpers.CSSHelp(document).getRuleListsWithinMedia('(max-width: 800px)');
assert(rules?.find(rule => rule.selectorText === '#gallery img'));

La regola #gallery img dovrebbe avere una proprietà width con il valore 50%.

const rules = new __helpers.CSSHelp(document).getRuleListsWithinMedia('(max-width: 800px)');
const imgRule = rules?.find(rule => rule.selectorText === '#gallery img');
assert(imgRule?.style.width === '50%');

--seed--

--seed-contents--

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Photo Gallery</title>
    <link rel="stylesheet" href="./styles.css">
  </head>
  <body>
    <div class="header">
      <h1>CSS FLEXBOX PHOTO GALLERY</h1>
    </div>
    <div id="gallery">
      <img src="https://cdn.freecodecamp.org/curriculum/css-photo-gallery/1.jpg"/>
      <img src="https://cdn.freecodecamp.org/curriculum/css-photo-gallery/2.jpg"/>
      <img src="https://cdn.freecodecamp.org/curriculum/css-photo-gallery/3.jpg"/>
      <img src="https://cdn.freecodecamp.org/curriculum/css-photo-gallery/4.jpg"/>
      <img src="https://cdn.freecodecamp.org/curriculum/css-photo-gallery/5.jpg"/>
      <img src="https://cdn.freecodecamp.org/curriculum/css-photo-gallery/6.jpg"/>
      <img src="https://cdn.freecodecamp.org/curriculum/css-photo-gallery/7.jpg"/>
      <img src="https://cdn.freecodecamp.org/curriculum/css-photo-gallery/8.jpg"/>
      <img src="https://cdn.freecodecamp.org/curriculum/css-photo-gallery/9.jpg"/>
      <img src="https://cdn.freecodecamp.org/curriculum/css-photo-gallery/10.jpg"/>
    </div>
  </body>
</html>
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial;
  background: #EBE7E7;
}

.header {
  text-align: center;
  padding: 32px;
  background: #E0DDDD;
}

#gallery {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  padding: 0 4px;
}

#gallery img {
  width: 25%;
  height: 300px;
  object-fit: cover;
  margin-top: 8px;
  padding: 0 4px;
  border-radius: 10px;
}

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