CSS3向下滚动动画

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html

css

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html

<div class="css-scroll-down">
        <div class="single-scroll-down-animation animation1">
            
            <h4>scroll effect-1</h4>

<div class="scroll-down1">
                <i class="fa fa-angle-down"></i>
            </div>
        </div>

<div class="single-scroll-down-animation animation2">
            
            <h4>scroll effect-2</h4>

<div class="scroll-down2"></div>
        </div>

<div class="single-scroll-down-animation animation3">
            
            <h4>scroll effect-3</h4>

<div class="scroll-down3">
                <i class="fa fa-angle-down"></i>
            </div>
        </div>

<div class="single-scroll-down-animation animation4">
            
            <h4>scroll effect-4</h4>

<div class="scroll-down4"></div>
        </div>

<div class="single-scroll-down-animation animation5">
            
            <h4>scroll effect-5</h4>

<div class="scroll-down5"></div>
        </div>
    </div>

css

@import url("https://s2.pstatp.com/cdn/expire-1-M/font-awesome/4.7.0/css/font-awesome.min.css");
@import url("https://fonts.googleapis.com/css?family=Montserrat:400,600,700,800,900");
* {
  margin: 0px;
  padding: 0px;
  box-sizing: border-box;
}

*:focus {
  box-shadow: none;
  border: none;
  outline: none;
}

body,
html {
  height: 100%;
  width: 100%;background-color: #1F1F1F;
}

body,
p {
  font: 400 18px/30px "Poppins", sans-serif;
  color: #5d6483;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: #4154fe;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
a {
  margin: 0px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: normal;
  -webkit-font-variant-ligatures: common-ligatures;
  font-variant-ligatures: common-ligatures;
}

a:hover,
a:focus,
input:focus,
button:focus,
a:active {
  text-decoration: none;
  outline: none;
  outline-offset: 0px;
  box-shadow: none;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

input,
textarea,
select {
  border: 1px solid #d1d1d1;
  font-size: 14px;
  padding: 8px 15px;
  width: 100%;
  resize: none;
}

/*-----end default style (you can remove this code)------*/
.css-scroll-down {
  display: flex;
  flex-flow: row;
  align-items: flex-start;
  padding: 50px 30px;
}
.css-scroll-down .single-scroll-down-animation {
  margin-right: 20px;
  width: calc(25% - 20px);
  margin-bottom: 50px;
}
.css-scroll-down .single-scroll-down-animation h4 {
  text-transform: uppercase;
  font-weight: 700;
  font-size: 20px;
  text-align: center;
  margin-bottom: 30px;
}

.scroll-down1 {
  width: 50px;
  height: 50px;
  border-radius: 100%;
  border: 2px solid #00b4ff;
  font-size: 30px;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-flow: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}
.scroll-down1 i {
  color: #00b4ff;
  animation: scrollDown1 1.5s ease infinite;
}

@keyframes scrollDown1 {
  0% {
    transform: translateY(-15px);
    opacity: 0;
  }
  50% {
    transform: translateY(0px);
    opacity: 1;
  }
  100% {
    transform: translateY(15px);
    opacity: 0;
  }
}
.scroll-down2 {
  width: 30px;
  height: 50px;
  border: 2px solid #00b4ff;
  border-radius: 50px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  margin: 0 auto;
}
.scroll-down2:before {
  content: "";
  position: absolute;
  left: 50%;
  top: 20px;
  width: 6px;
  height: 6px;
  border-radius: 100%;
  transform: translateX(-50%);
  background: #00b0ff;
  animation: scrollDown2 1.5s ease infinite;
}
.scroll-down2:after {
  content: "";
  position: absolute;
  left: 50%;
  top: 5px;
  width: 6px;
  height: 15px;
  border-radius: 3px;
  transform: translateX(-50%);
  background: #00b0ff;
}

@keyframes scrollDown2 {
  0% {
    transform: translate(-50%, 0px);
    opacity: 0;
  }
  50% {
    transform: translate(-50%, 8px);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, 16px);
    opacity: 0;
  }
}
.scroll-down3 {
  width: 50px;
  height: 50px;
  border-radius: 100%;
  border: 2px solid #00b4ff;
  font-size: 30px;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-flow: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}
.scroll-down3 i {
  color: #00b4ff;
  animation: scrollDown3 2s ease infinite;
}

@keyframes scrollDown3 {
  0% {
    transform: translateY(-15px);
    opacity: 0;
  }
  45% {
    transform: translateY(0px);
    opacity: 1;
  }
  65% {
    transform: translateY(-5px);
    opacity: 1;
  }
  100% {
    transform: translateY(15px);
    opacity: 0;
  }
}
.scroll-down4 {
  width: 3px;
  height: 80px;
  background: #00b0ff;
  animation: scrollDown4 2s ease infinite;
  margin: 0 auto;
}

@keyframes scrollDown4 {
  0% {
    transform-origin: top;
    transform: scaleY(0);
  }
  45% {
    transform-origin: top;
    transform: scaleY(1);
  }
  55% {
    transform-origin: bottom;
    transform: scaleY(1);
  }
  100% {
    transform-origin: bottom;
    transform: scaleY(0);
  }
}
.scroll-down5 {
  width: 2px;
  height: 110px;
  position: relative;
  background: transparent;
  animation: scrollDown5 1.5s ease infinite;
  border-radius: 100%;
  margin: 0 auto;
}
.scroll-down5:before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(transparent, #00b0ff, transparent);
}

@keyframes scrollDown5 {
  0% {
    transform-origin: top;
    transform: scaleY(0);
  }
  45% {
    transform-origin: top;
    transform: scaleY(1);
  }
  55% {
    transform-origin: bottom;
    transform: scaleY(1);
  }
  100% {
    transform-origin: bottom;
    transform: scaleY(0);
  }
}

JavaScript

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