CSS内容溢出阴影效果

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html

css

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html

<div id="page">
  <h1>仅CSS，内容溢出阴影</h1>
  <p class="lead">淡出溢出的文本或内容的更好方法。</p>
  <hr>
  
  <p>Horizontal Scrollable Box ?</p>
  <small>左右阴影</small>
  
  <div class="scrollbox nowrap">
    <div class="scrollable">
      <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Optio similique nostrum sequi nemo nisi placeat voluptas deleniti provident, quo omnis nobis sunt, necessitatibus atque consectetur, aut asperiores dolores accusamus temporibus.</p>
    </div>
    <div class="background"></div>
  </div>
  
  
  <p>Vertical Scrollable Box ?</p>
  <small>顶部和底部阴影</small>
  
  <div class="scrollbox vertical">
    <div class="scrollable">
      <p>Lorem ipsum, dolor sit amet consectetur adipisicing elit. Optio similique nostrum sequi nemo nisi placeat voluptas deleniti provident, quo omnis nobis sunt, necessitatibus atque consectetur, aut asperiores dolores accusamus temporibus.</p>
      <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Similique quas veniam quaerat tenetur nemo fugit natus pariatur rerum molestias? Doloribus dolores illum deleniti, obcaecati ducimus veniam? Amet alias ipsum eos.</p>
      <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Hic repudiandae beatae quisquam in ratione architecto tempora accusamus? Dolorem at quisquam vel alias sint esse. Est dicta iusto deleniti nemo itaque!</p>
    </div>
    <div class="background"></div>
  </div>

css

* {
  box-sizing: border-box;
}

body, html {
  width: 100%;
  min-height: 100%;
}

body {
  background: #100e17;
  z-index: -3;
  position: relative;
}

html {
  background: white;
  font: 16px sans-serif;
  color: #fff;
  background: #100e17;
}

h1 {
  text-align: center;
  margin-bottom: 0px;
  color: #fff;
}

footer {
  margin-top: 10px;
}
footer a {
  font-weight: bold;
  text-decoration: none;
  background: -webkit-gradient(linear, right top, left top, from(#ff8a00), to(#e52e71));
  background: linear-gradient(270deg, #ff8a00, #e52e71);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
}
footer a:hover {
  background: none;
  background-clip: initial;
  -webkit-text-fill-color: initial;
  color: #fff;
  text-decoration: underline;
}

p {
  text-align: center;
  font-size: 20px;
  margin-bottom: 5px;
}
p.lead {
  font-weight: bold;
  color: #fff;
  margin-bottom: 1em;
  background: -webkit-gradient(linear, right top, left top, from(#ff8a00), to(#e52e71));
  background: linear-gradient(270deg, #ff8a00, #e52e71);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
}
p + small {
  margin-bottom: 15px;
  color: #7568a3;
}

hr {
  width: 60%;
  border: none;
  height: 1px;
  background: #444;
  margin: 20px auto;
}

#page {
  display: -webkit-box;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
          flex-direction: column;
  width: 100%;
  min-height: 100%;
  -webkit-box-pack: center;
          justify-content: center;
  -webkit-box-align: center;
          align-items: center;
  padding: 20px 20px 120px 20px;
}

.scrollbox {
  display: block;
  width: 300px;
  height: 62px;
  min-height: 62px;
  margin: 10px auto 40px auto;
  position: relative;
  border: 3px solid lightsalmon;
}
.scrollbox .background {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: black;
  z-index: -2;
}
.scrollbox .scrollable {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  padding: 20px;
  background: -webkit-gradient(linear, left top, right top, from(black), to(black)), -webkit-gradient(linear, left top, right top, from(black), to(black)), -webkit-gradient(linear, left top, right top, from(black), to(rgba(0, 0, 0, 0))), -webkit-gradient(linear, right top, left top, from(black), to(rgba(0, 0, 0, 0)));
  background: linear-gradient(to right, black, black), linear-gradient(to right, black, black), linear-gradient(to right, black, rgba(0, 0, 0, 0)), linear-gradient(to left, black, rgba(0, 0, 0, 0));
  background: -webkit-linear-gradient(to right, black, black), -webkit-linear-gradient(to right, black, black), -webkit-linear-gradient(to right, black, rgba(0, 0, 0, 0)), -webkit-linear-gradient(to left, black, rgba(0, 0, 0, 0));
  background-position: left center, right center, left center, right center;
  background-repeat: no-repeat;
  background-color: transparent;
  background-size: 20px 100%, 20px 100%, 20px 100%, 20px 100%;
  background-attachment: local, local, scroll, scroll;
}
.scrollbox.nowrap {
  white-space: nowrap;
}
.scrollbox p {
  font-size: 16px;
  float: left;
  clear: both;
  padding-right: 20px;
  color: #fff;
  position: relative;
  z-index: -1;
  line-height: 1em;
  margin: 0;
}
.scrollbox.vertical {
  height: 300px;
  min-height: 300px;
}
.scrollbox.vertical .scrollable {
  padding: 20px;
  background: -webkit-gradient(linear, left top, right top, from(black), to(black)), -webkit-gradient(linear, left top, right top, from(black), to(black)), -webkit-gradient(linear, left top, left bottom, from(black), to(rgba(0, 0, 0, 0))), -webkit-gradient(linear, left bottom, left top, from(black), to(rgba(0, 0, 0, 0)));
  background: linear-gradient(to right, black, black), linear-gradient(to right, black, black), linear-gradient(to bottom, black, rgba(0, 0, 0, 0)), linear-gradient(to top, black, rgba(0, 0, 0, 0));
  background: -webkit-linear-gradient(to right, black, black), -webkit-linear-gradient(to right, black, black), -webkit-linear-gradient(to bottom, black, rgba(0, 0, 0, 0)), -webkit-linear-gradient(to top, black, rgba(0, 0, 0, 0));
  background-position: top center, bottom center, top center, bottom center;
  background-repeat: no-repeat;
  background-color: transparent;
  background-size: 100% 20px, 100% 40px, 100% 20px, 100% 40px;
  background-attachment: local, local, scroll, scroll;
}
.scrollbox.vertical p {
  margin: 0 0 1em 0;
  line-height: 1.46em;
}
.scrollbox.vertical p:last-child {
  margin-bottom: 20px;
}

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