背景プロパティ

1.画像のダウンロード

2. html

  <div class="container">
    <header>
      <h1>Website Title</h1>
      <p>Website slogan included here.</p>

      <nav class="site-nav">
        <ul class="group">
          <li><a href="#">Home</a></li>
          <li><a href="#">About</a></li>
          <li><a href="#">Portfolio</a></li>
          <li><a href="#">Contact Us</a></li>
        </ul>
      </nav>
    </header>

    <div class="content-area group">

      <div class="main-area">
        <h2>Main Column Heading</h2>

        <p>This is the main area (or column). Consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore
          et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris</p>

        <div class="birds">
          <p>Birds are great!</p>
        </div>
        <!-- /birds -->

        <p>nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
          cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui
          officia deserunt mollit anim id est
          laborum.</p>

        <ul>
          <li>Example list item</li>
          <li>Example list item</li>
          <li>Example list item</li>
          <li>Example list item</li>
          <li>Example list item</li>
          <li>Example list item</li>
        </ul>

        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et
          dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea
          commodo consequat. Duis aute irure
          dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat
          cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>

        <p>In reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat
          cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit
          amet, consectetur adipisicing elit,
          sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud.</p>
      </div>

      <aside class="sidebar">
        <p>This is the sidebar. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor
          incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco
          laboris nisi ut aliquip ex ea commodo consequat.
          Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu.</p>
      </aside>

    </div>

    <footer>
      <p>&copy; 2021 - This is the footer.</p>
    </footer>
  </div>

3. css

@import url('https://fonts.googleapis.com/css2?family=PT+Sans:ital,wght@0,400;0,700;1,400;1,700&display=swap');

html {
  background-color: #869960;
  line-height: 1.7;
}

body {
  font-family: 'PT Sans', Arial, sans-serif;
  font-size: 15px;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  text-decoration: none;
}

/* Birds Background Demo */

.birds {
  background-color: #c2bbb1;
  text-align: center;
  padding: 100px 0;
}

.birds p {
  margin: 0;
  background-color: rgba(0, 0, 0, 0.7);
  color: #fff;
  text-shadow: 1px 1px 0 #000;
  display: inline-block;
  padding: 10px;
}

/* End Birds Demo */

/* Main Column Typography */
.main-area h2 {
  font-size: 200%;
  font-weight: normal;
  font-style: italic;
  letter-spacing: 4px;
  word-spacing: 10px;
  text-transform: lowercase;
}

.main-area p {
  font-size: 108%;
}

/* Banner Overlay */
.image-banner {
  position: relative;
}

.image-banner img {
  display: block;
}

.banner-description {
  position: absolute;
  bottom: 0;
  left: 0;
  color: #fff;
  background-color: rgba(0, 0, 0, 0.65);
  padding: 15px 25px;
}


.container {
  width: 940px;
  margin-left: auto;
  margin-right: auto;
  background-color: #FFF;
  padding-top: 15px;
  padding-left: 40px;
  box-sizing: border-box;
}


header {
  padding-top: 20px;
  color: #617140;
}

header h1 {
  margin: 0;
  font-weight: normal;
  font-size: 165%;
}

header p {
  margin: 0;
}

/* Site Navigation */
.site-nav {
  margin-top: 20px;
}

.site-nav ul {
  margin: 0;
  padding: 0;
}

.site-nav li {
  list-style: none;
  float: left;
  margin-right: 5px;
}

.site-nav a {
  display: block;
  color: #617140;
  text-decoration: none;
  padding: 10px 20px;
  background-color: #fff;
  border: 3px solid #e5e9dc;
  border-bottom: none;
}

.site-nav a:hover {
  background-color: #e5e9dc;
}

/* End Site Navigation */

.content-area {
  border-top: 3px solid #e5e9dc;
  border-bottom: 3px solid #e5e9dc;
}

.main-area {
  width: 66%;
  float: left;
  padding-right: 40px;
  box-sizing: border-box;
}

.sidebar {
  width: 34%;
  float: left;
  background-color: #e5e9dc;
  padding: 20px 40px;
  box-sizing: border-box;
  font-size: 114%;
}

footer {
  text-align: center;
  font-size: 85%;
  color: #999;
  padding-bottom: 20px;
  padding-top: 20px;
}

.fix {
  clear: both;
}

.group:before,
.group:after {
  content: "";
  display: table;
}

.group:after {
  clear: both;
}

.group {
  zoom: 1;
}

4.コンテナに背景画像を追加

background-image: url(images/color-tile.png);

5. no-repeat , repeat-x

6.タイトルに花の画像を追加

7.花写真位置中央右、Rifit X

  background-position: center right;
  background-repeat: no-repeat;

8.新しい写真を主なイメージとする

  background-color: #c2bbb1;
  background-image: url(images/bird.jpg);
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;

9.4つの属性を1行に減らします。backgound:

  background: #c2bbb1 url(images/bird.jpg) center center no-repeat;
  background-size: cover;

10.コンテナ上部の画像も1行に並べ、複数の背景

  background-color: #FFF;
  background-image: url(images/color-tile.png);
  background-repeat: repeat-x;
  아래처럼 한줄로 수정
  background: #FFF url(images/color-tile.png) repeat-x left top;

  background: url(images/color-tile.png) repeat-x left bottom, #FFF url(images/color-tile.png) repeat-x left top;