CSS`背景重复`属性

Question

我正在阅读 Jon Duckett 的 HTML 和 CSS，并且正在了解 CSS background-repeat 属性。

现在，我在下面的代码片段中生成了来自 background-repeat 的代码。

body {
  background-image: url("https://image.ibb.co/gE9g95/header.gif");
  background-repeat: repeat-x;
  color: #665544;
  padding: 20px;
}

h1 {
  color: white;
}

<!DOCTYPE html>
<html>

<head>
  <title>Background Image (Body)</title>
</head>

<body>
  <h1>Planting Guide</h1>
  <h2>Magnolia</h2>
  <p><b><i>Magnolia grandiflora</i></b>, commonly known as the <b>Southern magnolia</b> or <b>bull bay</b>, is a tree of the family Magnoliaceae native to the southeastern United States, from coastal Virginia south to central Florida, and west to eastern
    Texas and Oklahoma. Reaching 27.5 m (90 ft) in height, it is a large striking evergreen tree with large dark green leaves and large white fragrant flowers. Widely cultivated around the world, over a hundred cultivars have been bred and marketed commercially.
    The timber is hard and heavy, and has been used commercially to make furniture, pallets, and veneer.</p>
  <h2>Ranunculus</h2>
  <p><b><i>Ranunculus asiaticus (Persian Buttercup)</i></b> is a species of buttercup (Ranunculus) native to the eastern Mediterranean region in southwestern Asia, southeastern Europe (Crete, Karpathos and Rhodes), and northeastern Africa. It is a herbaceous
    perennial plant growing to 45 cm tall, with simple or branched stems. The basal leaves are three-lobed, with leaves higher on the stems more deeply divided; like the stems, they are downy or hairy. The flowers are 3-5 cm diameter, variably red to
    pink, yellow, or white, with one to several flowers on each stem.</p>
  <h2>Tulip</h2>
  <p><b><i>Tulipa gesneriana L. or "Didier's tulip"</i></b> is a plant belonging to the family of Liliaceae. This species has uncertain origins, possibly from Asia, and has become naturalised in south-west Europe. Most of the cultivated species, subspecies
    and cultivars of tulip are derived from Tulipa gesneriana. The flower and bulb can cause dermatitis through the allergen, tuliposide A, even though the bulbs may be consumed with little ill-effect. The sweet-scented bisexual flowers appear during
    April and May. Bulbs are extremely resistant to frost, and can tolerate temperatures well below freezing - a period of low temperature is necessary to induce proper growth and flowering, triggered by an increase in sensitivity to the phytohormone
    auxin. The bulbs may be dried and pulverised and added to cereals or flour.</p>
</body>

</html>

现在，我的问题是 - 默认情况下，background-image 属性是否沿元素（在本例中为 body 元素）重复（或 "tessellate"）图像？

Answer 1

背景图片根据背景位置属性放置。 如果没有指定背景位置，图像总是放置在元素的左上角角。

默认情况下，背景图像在垂直和水平方向上重复。

https://www.w3schools.com/cssref/pr_background-repeat.asp

CSS`背景重复`属性

CSS `background-repeat` property

html

css

background-image