---
id: 619943876b706d0f35c01dbc
title: ステップ 37
challengeType: 0
dashedName: step-37
---

# --description--

`.penguin-head` 要素の重ね合わせレベルを変更して、`.penguin-body` 要素の手前に表示されるようにしてください。

# --hints--

`z-index` プロパティを使用して重ね合わせレベルを変更する必要があります。

```js
assert.notEmpty(new __helpers.CSSHelp(document).getStyle('.penguin-head')?.zIndex);
```

`.penguin-head` 要素の `z-index` を `1` に設定する必要があります。

```js
assert.equal(new __helpers.CSSHelp(document).getStyle('.penguin-head')?.zIndex, '1');
```

# --seed--

## --seed-contents--

```html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <link rel="stylesheet" href="./styles.css" />
    <title>Penguin</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  </head>

  <body>
    <div class="left-mountain"></div>
    <div class="back-mountain"></div>
    <div class="sun"></div>
    <div class="penguin">
      <div class="penguin-head"></div>
      <div class="penguin-body"></div>
    </div>

    <div class="ground"></div>
  </body>
</html>
```

```css
body {
  background: linear-gradient(45deg, rgb(118, 201, 255), rgb(247, 255, 222));
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.left-mountain {
  width: 300px;
  height: 300px;
  background: linear-gradient(rgb(203, 241, 228), rgb(80, 183, 255));
  position: absolute;
  transform: skew(0deg, 44deg);
  z-index: 2;
  margin-top: 100px;
}

.back-mountain {
  width: 300px;
  height: 300px;
  background: linear-gradient(rgb(203, 241, 228), rgb(47, 170, 255));
  position: absolute;
  z-index: 1;
  transform: rotate(45deg);
  left: 110px;
  top: 225px;
}

.sun {
  width: 200px;
  height: 200px;
  background-color: yellow;
  position: absolute;
  border-radius: 50%;
  top: -75px;
  right: -75px;
}

.penguin {
  width: 300px;
  height: 300px;
  margin: auto;
  margin-top: 75px;
  z-index: 4;
  position: relative;
}

.penguin * {
  position: absolute;
}

--fcc-editable-region--
.penguin-head {
  width: 50%;
  height: 45%;
  background: linear-gradient(
    45deg,
    gray,
    rgb(239, 240, 228)
  );
  border-radius: 70% 70% 65% 65%;
  top: 10%;
  left: 25%;

}
--fcc-editable-region--

.penguin-body {
  width: 53%;
  height: 45%;
  background: linear-gradient(
    45deg,
    rgb(134, 133, 133) 0%,
    rgb(234, 231, 231) 25%,
    white 67%
  );
  border-radius: 80% 80% 100% 100%;
  top: 40%;
  left: 23.5%;
}

.ground {
  width: 100vw;
  height: 400px;
  background: linear-gradient(90deg, rgb(88, 175, 236), rgb(182, 255, 255));
  z-index: 3;
  position: absolute;
  margin-top: -58px;
}
```
