freeCodeCamp/curriculum/challenges/italian/14-responsive-web-design-22/learn-intermediate-css-by-b.../60b69a66b6ddb80858c5158f.md

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---
id: 60b69a66b6ddb80858c5158f
title: Step 25
challengeType: 0
dashedName: step-25
---
# --description--
Usando un selettore di `id`, assegna all'elemento `gray-instrument` una proprietà `width` del `15%`, una proprietà `height` del `40%` e un `background-color` con il valore `rgb(167, 162, 117)`.
# --hints--
Dovresti avere un selettore `#gray-instrument`.
```js
assert(new __helpers.CSSHelp(document).getStyle('#gray-instrument'));
```
Il selettore `#gray-instrument` dovrebbe avere una proprietà `width` impostata al `15%`.
```js
assert(new __helpers.CSSHelp(document).getStyle('#gray-instrument')?.width === '15%');
```
Il selettore `#gray-instrument` dovrebbe avere una proprietà `height` impostata al `40%`.
```js
assert(new __helpers.CSSHelp(document).getStyle('#gray-instrument')?.height === '40%');
```
Il selettore `#gray-instrument` dovrebbe avere una proprietà `background-color` con il valore `rgb(167, 162, 117)`.
```js
assert(new __helpers.CSSHelp(document).getStyle('#gray-instrument')?.backgroundColor === 'rgb(167, 162, 117)');
```
# --seed--
## --seed-contents--
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Picasso Painting</title>
<link rel="stylesheet" href="./styles.css" />
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.2/css/all.css">
</head>
<body>
<div id="back-wall"></div>
<div class="characters">
<div id="offwhite-character">
<div id="white-hat"></div>
<div id="black-mask">
<div class="eyes left"></div>
<div class="eyes right"></div>
</div>
<div id="gray-instrument">
<div class="black-dot"></div>
<div class="black-dot"></div>
<div class="black-dot"></div>
<div class="black-dot"></div>
<div class="black-dot"></div>
</div>
<div id="tan-table"></div>
</div>
</div>
</body>
</html>
```
```css
body {
background-color: rgb(184, 132, 46);
}
#back-wall {
background-color: #8B4513;
width: 100%;
height: 60%;
position: absolute;
top: 0;
left: 0;
z-index: -1;
}
#offwhite-character {
width: 300px;
height: 550px;
background-color: GhostWhite;
position: absolute;
top: 20%;
left: 17.5%;
}
#white-hat {
width: 0;
height: 0;
border-style: solid;
border-width: 0 120px 140px 180px;
border-top-color: transparent;
border-right-color: transparent;
border-bottom-color: GhostWhite;
border-left-color: transparent;
position: absolute;
top: -140px;
left: 0;
}
#black-mask {
width: 100%;
height: 50px;
background-color: rgb(45, 31, 19);
position: absolute;
top: 0;
left: 0;
z-index: 1;
}
--fcc-editable-region--
--fcc-editable-region--
```