有趣且实用的 CSS 小技巧

7. CSS 模态框

我仓鼠饲养八大禁忌们可以使用 CSS 中的 :target 伪元素来创建一个模态框。

<div class="wrapper">
    <a href="#demo-modal">Open Modal</a>
</div>
<div id="demo-modal" class="modal">
    <div class="modal__content">
        <h1>CSS Modal</h1>
        <p>hello world</p>
        <a href="#" class="modal__close">&times;</a>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right, #834d9b, #d04ed6);
}
.wrapper a {
  display: inline-block;
  text-decoration: none;
  padding: 15px;
  background-color: #fff;
  border-radius: 3px;
  text-transform: uppercase;
  color: #585858;
  font-family: 'Roboto', sans-serif;
}
.modal {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(77, 77, 77, .7);
  transition: all .4s;
}
.modal:target {
  visibility: visible;
  opacity: 1;
}
.modal__content {
  border-radius: 4px;
  position: relative;
  width: 500px;
  max-width: 90%;
  background: #fff;
  padding: 1em 2em;
}
.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  text-decoration: none;
}

实现效果：

8. 空元素样式

可以使用 :empty 选择器来设置完全没有子元素或文本的元素的辰时是几点到几点样式从山神开始的诸天之旅：

<div class="wrapper">
  <div class="box"></div>
  <div class="box">白日依山尽，黄河入海流。欲穷千里目，更上一层楼。</div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.box {
  display: inline-block;
  background: #999;
  border: 1px solid #585858;
  height: 200px;
  width: 200px;
  margin-right: 15px;
}
.box:empty {
  background: #fff;
}

实现效果：

9. 创建自定义滚动条

<div class="wrapper">
    <div>
      <div class="tile mr-1">
        <div class="tile-content">
          默认滚动条
        </div>
      </div>
      <div class="tile tile-custom-scrollbar">
        <div class="tile-content">
          自定义滚动条
        </div>
      </div>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-1 {
  margin-right: 1em;
}
.tile {
  overflow: auto;
  display: inline-block;
  background-color: #ccc;
  height: 200px;
  width: 180px;
}
.tile-custom-scrollbar::-webkit-scrollbar {
  width: 12px;
  background-color: #eff1f5;
}
.tile-custom-scrollbar::-webkit-scrollbar-track{
  border-radius: 3px;
  background-color: transparent;
}
.tile-custom-scrollbar::-webkit-scrollbar-thumb{
  border-radius:5px;
  background-color:#515769;
  border:2px solid #eff1f5
}
.tile-content {
  padding: 20px;
  height: 500px;
}

实现效果：

10.javascript 动态工具提示

可以使用 CSS 函数 attr() 来创建动态的纯 CSS 工appearance具提示 。

<h1>
  HTML/CSS tooltip
</h1>
<p>
  Hover <span class="tooltip" data-tooltip="Tooltip Content">Here</span> to see the tooltip.
</p>
<p>
  You can also hover <span class="tooltip" data-tooltip="This is another Tooltip Content">here</span> to see another example.
</p>

.tooltip {
  position: relative;
  border-bottom: 1px dotted black;
}
.tooltip:before {
  content: attr(data-tooltip); 
  position: absolute;
  width: 100px;
  background-color: #062B45;
  color: #fff;
  text-align: center;
  padding: 10px;
  line-height: 1.2;
  border-radius: 6px;
  z-index: 1;
  opacity: 0;
  transition: opacity .6s;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  font-size: 0.75em;
  visibility: hidden;
}
.tooltip:after {
  content: "";
  position: absolute;
  bottom: 75%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  opacity: 0;
  transition: opacity .6s;
  border-color: #062B45 transparent transparent transparent;
  visibility: hidden;
}
.tooltip:hover:before, 
.tooltip:hover:after {
  opacity: 1;
  visibility: visible;
}

实现效果：

1http://192.168.1.1登录1. 圆形渐变边框

<div class="box gradient-border">
  炫酷渐变边框
</div>

.gradient-border {
  border: solid 5px transparent;
  border-radius: 10px;
  background-image: linear-gradient(white, white), 
    linear-gradient(315deg,#833ab4,#fd1d1d 50%,#fcb045);
  background-origin: border-box;
  background-clip: content-box, border-box;
}
.box {
  width: 350px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 100px auto;
}

实现效果：

12. 灰度图片

可以使用 grayscale(javascript) 过滤器功能将输入图像转换为灰度。