全屏图像上的CSS幻灯片动画

分类：编程问答

如何解决全屏图像上的CSS幻灯片动画

我的目标网页上有两张图片，它们以默认的淡入淡出动画来回移动。我的第一个问题是我想使用滑动动画，但是我没有找到任何更改它的选项。我的第二个问题是渐变动画仅适用于chrome 。有什么方法可以在其他浏览器中解决吗？

我的代码： 

/* basicStyle.css */
* {
  margin: 0;
  padding: 0;
}

.container {
  width: 100%;
  height: 100%;
}

.lead {
  font-size: 1.5rem;
}

.navbar {
  position: fixed;
  top: 0;
  z-index: 1;
  display: flex;
  width: 100%;
  height: 60px;
  background: rgba(0,0.7);
}

.navbar ul {
  display: flex;
  list-style: none;
  width: 100%;
  justify-content: center;
}

.navbar ul li {
  margin: 0 1rem;
  padding: 1rem;
}

.navbar ul li a {
  text-decoration: none;
  text-transform: uppercase;
  color: #f4f4f4;
}

.navbar ul li a:hover {
  color: skyblue;
}

section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
}

section h1 {
  font-size: 4rem;
}

/* Section Images */
section#home {
  background: black;
  min-height: 100vh;
}

section#gallery {
  background: red;
  min-height: 100vh;
}

section#about {
  background: green;
  min-height: 100vh;
}

section#contact {
  background: blue;
  min-height: 100vh;
}


/* LandingPage.css */
* {
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Montserrat';
  font-size: 17px;
  color: #fff;
  line-height: 1.6;
}

#showcase {
  background: url('https://images.unsplash.com/photo-1597368208802-2bec16fba411?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1051&q=80')
  100vw 0 no-repeat,url('https://images.unsplash.com/photo-1597390520089-9f46046ea040?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1041&q=80')
  0 0 no-repeat;
  background-size: cover;
  background-position: center;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 20px;
  animation: slide-right 15s forwards 2s infinite;
}

@keyframes slide-right {
  0% {
    background-position: 100vw 0,0 0;
  }
  50% {
    background-position: 0vw 0,0 0;
  }
  100% {
    background-position: 100vw 0,0 0;
  }
}

#showcase h1 {
  font-size: 50px;
  line-height: 1.2;
}

#showcase p {
  font-size: 20px;
  color: #fff;
}

#showcase .button {
  font-size: 18px;
  text-decoration: none;
  color: #fff;
  border: #fff 1px solid;
  padding: 10px 20px;
  border-radius: 10px;
  margin-top: 20px;
}

.main-section div.iScrollIndicator {
  background: white !important;
}

.navbar {
  position: fixed;

  top: 0;

  z-index: 1;
  display: flex;
  width: 100%;
  height: 70px;
  background: rgba(57,77,95,0.7);
  z-index: 2;
}

.navbar ul {
  display: flex;
  list-style: none;
  width: 100%;
  justify-content: center;
}

.navbar ul li {
  margin: 10px;
  padding: 5px;
}

.navbar ul li a {
  text-decoration: none;
  text-transform: uppercase;
  color: #f4f4f4;
  font-size: 30px;
}

.buttons {
  display: flex;
  justify-content: center;
}

.buttons .button {
  margin: 10px;
  display: grid;
  place-items: center;
}
<div class="container">
  <!-- <nav class="navbar">
    <ul>
      <li><a href="#home">Home</a></li>
      <li><a href="#about">About</a></li>
      <li><a href="#service">Service</a></li>
      <li><a href="#contact">Contact</a></li>
    </ul>
  </nav> -->
  <header id="showcase">
    <h1>Welcome!</h1>
    <div class="buttons">
      <a href="#about" class="button"><span>About</span></a>
      <a href="#gallery" class="button"><span>Gallery</span></a>
    </div>
  </header>
  <section id="about">
    <h1>About</h1>
  </section>
  <section id="gallery">
    <h1>Gallery</h1>
  </section>
  <section id="contact">
    <h1>Contact</h1>
  </section>
</div>

解决方法

我受到this answer的启发，并创建了以下代码段：

它使用多个背景，将顶层的屏幕设置为右侧的屏幕大小，然后将其移入。

非常简单，您可以轻松添加更多图像。代码注释向您展示了如何：）

* {
  margin: 0;
  padding: 0;
}

.container {
  width: 100%;
  height: 100%;
}

.lead {
  font-size: 1.5rem;
}

.navbar {
  position: fixed;
  top: 0;
  z-index: 1;
  display: flex;
  width: 100%;
  height: 60px;
  background: rgba(0,0.7);
}

.navbar ul {
  display: flex;
  list-style: none;
  width: 100%;
  justify-content: center;
}

.navbar ul li {
  margin: 0 1rem;
  padding: 1rem;
}

.navbar ul li a {
  text-decoration: none;
  text-transform: uppercase;
  color: #f4f4f4;
}

.navbar ul li a:hover {
  color: skyblue;
}

section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
}

section h1 {
  font-size: 4rem;
}

/* Section Images */
section#home {
  background: black;
  min-height: 100vh;
}

section#gallery {
  background: red;
  min-height: 100vh;
}

section#about {
  background: green;
  min-height: 100vh;
}

section#contact {
  background: blue;
  min-height: 100vh;
}

/* LandingPage.css */
* {
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  padding: 0;
  font-family: "Montserrat";
  font-size: 17px;
  color: #fff;
  line-height: 1.6;
}

#showcase {
  /*/ Last image first,add 100vw for each additional image. For infinite,make first picture the last /*/
  background: url("https://images.unsplash.com/photo-1597390520089-9f46046ea040?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1041&q=80")
      300vw 0 no-repeat,url("https://images.unsplash.com/photo-1521020781921-ce0d582b7665?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1350&q=80")
      200vw 0 no-repeat,url("https://images.unsplash.com/photo-1597368208802-2bec16fba411?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1051&q=80")
      100vw 0 no-repeat,url("https://images.unsplash.com/photo-1597390520089-9f46046ea040?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1041&q=80")
      0 0 no-repeat;
  /*/ For every image,one cover /*/
  background-size: cover,cover,cover;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 20px;
  animation: slide-right 8s forwards 1s infinite;
}
/*/ For four pictures,make keyframes at 0%,25%,75%,100%,for 6 pictures make 0%,20%,40%,60%,80%,100% etc./*/
@keyframes slide-right {
  0% {
    /*/ Add one 100vw 0 for each picture at every stage. It's always like a reverse stairway downwards /*/
    /* 3 100vw's*/
    background-position: 100vw 0,100vw 0,0 0;
  }
  33% {
    /*2 100vw's*/
    background-position: 100vw 0,0 0,0 0;
  }
  66% {
    /* 1 100vw'*/
    background-position: 100vw 0,0 0;
  }
  100% {
    /* The end - none left :)*/
    background-position: 0 0,0 0;
  }
}

#showcase h1 {
  font-size: 50px;
  line-height: 1.2;
}

#showcase p {
  font-size: 20px;
  color: #fff;
}

#showcase .button {
  font-size: 18px;
  text-decoration: none;
  color: #fff;
  border: #fff 1px solid;
  padding: 10px 20px;
  border-radius: 10px;
  margin-top: 20px;
}

.main-section div.iScrollIndicator {
  background: white !important;
}

.navbar {
  position: fixed;

  top: 0;

  z-index: 1;
  display: flex;
  width: 100%;
  height: 70px;
  background: rgba(57,77,95,0.7);
  z-index: 2;
}

.navbar ul {
  display: flex;
  list-style: none;
  width: 100%;
  justify-content: center;
}

.navbar ul li {
  margin: 10px;
  padding: 5px;
}

.navbar ul li a {
  text-decoration: none;
  text-transform: uppercase;
  color: #f4f4f4;
  font-size: 30px;
}

.buttons {
  display: flex;
  justify-content: center;
}

.buttons .button {
  margin: 10px;
  display: grid;
  place-items: center;
}
<div class="container">
  <!-- <nav class="navbar">
        <ul>
          <li><a href="#home">Home</a></li>
          <li><a href="#about">About</a></li>
          <li><a href="#service">Service</a></li>
          <li><a href="#contact">Contact</a></li>
        </ul>
      </nav> -->
  <header id="showcase">
    <h1>Welcome!</h1>

    <div class="buttons">
      <a href="#about" class="button"><span>About</span></a>
      <a href="#gallery" class="button"><span>Gallery</span></a>
    </div>
  </header>
  <section id="about">
    <h1>About</h1>
  </section>
  <section id="gallery">
    <h1>Gallery</h1>
  </section>
  <section id="contact">
    <h1>Contact</h1>
  </section>
</div>

,

尝试以一种方式重新排列background-position部分中的animation，该部分的数字以视口宽度（vw）为单位。

如果background排列中有3张图像，则如下图所示

  1. 100vw 0,0 0
  2. 100vw 0,0 0
  3. 0 0,0 0

，您还可以在代码中的<html>标签上简单地添加scroll-behavior属性，以使smooth滚动，从而在发生滚动事件时也使页面看起来更好。

示例

html{scroll-behavior: smooth;}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    color: #fff;
}
section,#showcase {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
section#gallery,section#home,section#about,section#contact,#showcase{min-height: 100vh;}
section{width: 100%;}
section h1 {font-size: 4rem;}
section#home {background: black;}
section#gallery {background: red;}
section#about {background: green;}
section#contact {background: blue;}
#showcase {
    background: url("https://images.unsplash.com/photo-1597390520089-9f46046ea040?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1041&q=80")
    200vw 0 no-repeat,url("https://images.unsplash.com/photo-1597368208802-2bec16fba411?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1051&q=80")
    100vw 0 no-repeat,url("https://images.unsplash.com/photo-1597390520089-9f46046ea040?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1041&q=80")
    0 0 no-repeat;
    background-size: cover;
    animation: slide-right 5s ease-in-out infinite;
}
@keyframes slide-right {
0% {background-position: 100vw 0,0 0;}
60% {background-position: 100vw 0,0 0;}
100% {background-position: 0 0,0 0;}
}

#showcase h1 {font-size: 50px;}
#showcase .button {
    font-size: 18px;
    text-decoration: none;
    border: #fff 1px solid;
    padding: 10px 20px;
    border-radius: 10px;
    margin-top: 20px;
}
.buttons {
    display: flex;
    justify-content: center;
}
.buttons .button {margin: 10px;}
<html>
<div class="container">
  <header id="showcase">
    <h1>Welcome!</h1>
    <div class="buttons">
      <a href="#about" class="button"><span>About</span></a>
      <a href="#gallery" class="button"><span>Gallery</span></a>
    </div>
  </header>
  <section id="about">
    <h1>About</h1>
  </section>
  <section id="gallery">
    <h1>Gallery</h1>
  </section>
  <section id="contact">
    <h1>Contact</h1>
  </section>
</div>
</html>

为了避免不必要的代码和DRY（不要重复自己），我也进行了过多的编辑，但希望对您有所帮助。

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