有趣且实用的 CSS 小技巧（上）

<div class="wrapper">
    <div class="typing-demo">
      有趣且实用的 CSS 小技巧
    </div>
</div>
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.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.typing-demo {
  width: 22ch;
  animation: typing 2s steps(22), blink .5s step-end infinite alternate;
  white-space: nowrap;
  overflow: hidden;
  border-right: 3px solid;
  font-family: monospace;
  font-size: 2em;
}
@keyframes typing {
  from {
    width: 0
  }
}
@keyframes blink {
  50% {
    border-color: transparent
  }
}
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<div class="wrapper">
  <div class="mr-2">
    <div class="mb-1 text-center">
      box-shadow
    </div>
    <img class="box-shadow" src="https://markodenic.com/man_working.png" alt="Image with box-shadow">
  </div>
  <div>
    <div class="mb-1 text-center">
      drop-shadow
    </div>
    <img class="drop-shadow" src="https://markodenic.com/man_working.png" alt="Image with drop-shadow">
  </div>
</div>
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.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-2 {
  margin-right: 2em;
}
.mb-1 {
  margin-bottom: 1em;
}
.text-center {
  text-align: center;
}
.box-shadow {
  box-shadow: 2px 4px 8px #585858;
}
.drop-shadow {
  filter: drop-shadow(2px 4px 8px #585858);
}
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<nav>
  Scroll to: 
  <a href="#sectionA" class="link bg-red">A</a>
  <a href="#sectionB" class="link bg-blue">B</a>
  <a href="#sectionC" class="link bg-green">C</a>
</nav>
<div class="wrapper">
  <div id="sectionA" class="section bg-red">A</div>
  <div id="sectionB" class="section bg-blue">B</div>
  <div id="sectionC" class="section bg-green">C</div>
</div>
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html {
  scroll-behavior: smooth;
}
nav {
  position: fixed;
  left: calc(50vw - 115px);
  top: 0;
  width: 200px;
  text-align: center;
  padding: 15px;
  background: #fff;
  box-shadow: 0 2px 5px 1px rgba(0, 0, 0, 0.2);
}
nav .link {
  padding: 5px;
  color: white;
}
.section {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 5em;
  text-shadow:
    0px 2px 0px #b2a98f,
    0px 4px 3px rgba(0,0,0,0.15),
    0px 8px 1px rgba(0,0,0,0.1);
}
.bg-red {
  background: #de5448;
}
.bg-blue {
  background: #4267b2;
}
.bg-green {
  background: #4CAF50;
}
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<div class="wrapper">
  <div class="tile">
    Default
  </div>
  <div class="tile tile-image-cursor">
    Image
  </div>
  <div class="tile tile-emoji-cursor">
    Emoji
  </div>
</div>
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.wrapper {
  display: flex;
  height: 100vh;
  align-items: center;
  justify-content: center;
  background: #4776e6;
  background: linear-gradient(to right, #4776e6, #8e54e9);
  padding: 0 10px;
}
.tile {
    width: 200px;
    height: 200px;display: flex;
    align-items: center;
    justify-content: center;
    background-color: #de5448;
    margin-right: 10px;color: #fff;
    font-size: 1.4em;
    text-align: center;
  }
.tile-image-cursor {
  background-color: #1da1f2;
  cursor: url(https://picsum.photos/20/20), auto;
}
.tile-emoji-cursor {
  background-color: #4267b2;
  cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'  width='40' height='48' viewport='0 0 100 100' style='fill:black;font-size:24px;'><text y='50%'>🚀</text></svg>"), auto;
}
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<div>
  白日依山尽，黄河入海流。欲穷千里目，更上一层楼。
</div>
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div {
  width: 200px;
  background-color: #fff;
  padding: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
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div {
  width: 200px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}
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<div class="wrapper">
  <div>
    <p>
     默认高亮
    </p>
    <p class="custom-highlighting">
      自定义高亮
    </p>
  </div>
</div>
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.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
p {
  font-size: 2rem;
  font-family: sans-serif;
}
.custom-highlighting::selection {
  background-color: #8e44ad;
  color: #fff;
}
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