html - 仅使用 CSS 的基于滚动的动画

Question

是否可以在滚动到图像时为图像设置动画？这就像当您向下滚动并到达页面的某个部分时，图像就会出现。是否可以仅使用 CSS？

Answer 1

试试这个:-

/*
 *Styling
 */

html,body {
        width: 100%;
        height: 100%;
        position: relative; 
}
body {
    overflow: hidden;
}

header {
    background: #fff; 
    position: fixed; 
    left: 0; top: 0; 
    width:100%;
    height: 3.5rem;
    z-index: 10; 
}

nav {
    width: 100%;
    padding-top: 0.5rem;
}

nav ul {
    list-style: none;
    width: inherit; 
    margin: 0; 
}


ul li:nth-child( 3n + 1), #main .panel:nth-child( 3n + 1) {
    background: rgb( 0, 180, 255 );
}

ul li:nth-child( 3n + 2), #main .panel:nth-child( 3n + 2) {
    background: rgb( 255, 65, 180 );
}

ul li:nth-child( 3n + 3), #main .panel:nth-child( 3n + 3) {
    background: rgb( 0, 255, 180 );
}

ul li {
    display: inline-block; 
    margin: 0 8px;
    margin: 0 0.5rem;
    padding: 5px 8px;
    padding: 0.3rem 0.5rem;
    border-radius: 2px; 
    line-height: 1.5;
}

ul li a {
    color: #fff;
    text-decoration: none;
}

.panel {
    width: 100%;
    height: 500px;
    z-index:0; 
    -webkit-transform: translateZ( 0 );
    transform: translateZ( 0 );
    -webkit-transition: -webkit-transform 0.6s ease-in-out;
    transition: transform 0.6s ease-in-out;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;

}

.panel h1 {
    font-family: sans-serif;
    font-size: 64px;
    font-size: 4rem;
    color: #fff;
    position:relative;
    line-height: 200px;
    top: 33%;
    text-align: center;
    margin: 0;
}

/*
 *Scrolling
 */

a[ id= "servicios" ]:target ~ #main article.panel {
    -webkit-transform: translateY( 0px);
    transform: translateY( 0px );
}

a[ id= "galeria" ]:target ~ #main article.panel {
    -webkit-transform: translateY( -500px );
    transform: translateY( -500px );
}
a[ id= "contacto" ]:target ~ #main article.panel {
    -webkit-transform: translateY( -1000px );
    transform: translateY( -1000px );
}

<a id="servicios"></a>
    <a id="galeria"></a>
    <a id="contacto"></a>
    <header class="nav">
        <nav>
            <ul>
                <li><a href="#servicios"> Servicios </a> </li>
                <li><a href="#galeria"> Galeria </a> </li>
                <li><a href="#contacto">Contacta  nos </a> </li>
            </ul>
        </nav>
    </header>

    <section id="main">
        <article class="panel" id="servicios">
            <h1> Nuestros Servicios</h1>
        </article>

        <article class="panel" id="galeria">
            <h1> Mustra de nuestro trabajos</h1>
        </article>

        <article class="panel" id="contacto">
            <h1> Pongamonos en contacto</h1>
        </article>
    </section>

或

/* ============================================================
  PRIMARY STRUCTURE
============================================================ */
.container {
  max-width: 960px;
  margin: 0 auto;
}
/* ============================================================
  SECTIONS
============================================================ */
section.module:last-child {
  margin-bottom: 0;
}
section.module h2 {
  margin-bottom: 40px;
  font-family: "Roboto Slab", serif;
  font-size: 30px;
}
section.module p {
  margin-bottom: 40px;
  font-size: 16px;
  font-weight: 300;
}
section.module p:last-child {
  margin-bottom: 0;
}
section.module.content {
  padding: 40px 0;
}
section.module.parallax {
  height: 600px;
  background-position: 50% 50%;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
}
section.module.parallax h1 {
  color: rgba(255, 255, 255, 0.8);
  font-size: 48px;
  line-height: 600px;
  font-weight: 700;
  text-align: center;
  text-transform: uppercase;
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}
section.module.parallax-1 {
  background-image: url("http://labs.qnimate.com/slider/1.jpg");
}
section.module.parallax-2 {
  background-image: url("http://labs.qnimate.com/slider/2.jpg");
}
section.module.parallax-3 {
  background-image: url("http://labs.qnimate.com/slider/3.jpg");
}

@media all and (min-width: 600px) {
  section.module h2 {
    font-size: 42px;
  }
  section.module p {
    font-size: 20px;
  }
  section.module.parallax h1 {
    font-size: 96px;
  }
}
@media all and (min-width: 960px) {
  section.module.parallax h1 {
    font-size: 160px;
  }
}

<section class="module parallax parallax-1">
  <div class="container">
    <h1>Serene</h1>
  </div>
</section>

<section class="module content">
  <div class="container">
    <h2>Lorem Ipsum Dolor</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit...</p>
  </div>
</section>

<section class="module parallax parallax-2">
  <div class="container">
    <h1>Rise</h1>
  </div>
</section>

<section class="module content">
  <div class="container">
    <h2>Lorem Ipsum Dolor</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit...</p>
  </div>
</section>

<section class="module parallax parallax-3">
  <div class="container">
    <h1>Calm</h1>
  </div>
</section>

<section class="module content">
  <div class="container">
    <h2>Lorem Ipsum Dolor</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit...</p>
  </div>
</section>