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css焦点图制作

2026-02-12 15:00:52CSS

制作CSS焦点图的方法

基础HTML结构

使用一个容器包裹图片列表和导航按钮，通常用无序列表实现图片轮播项：

<div class="slideshow">
  <ul class="slides">
    <li><img src="image1.jpg"></li>
    <li><img src="image2.jpg"></li>
    <li><img src="image3.jpg"></li>
  </ul>
  <div class="controls">
    <a href="#" class="prev">❮</a>
    <a href="#" class="next">❯</a>
  </div>
  <div class="dots">
    <span class="dot" data-index="0"></span>
    <span class="dot" data-index="1"></span>
    <span class="dot" data-index="2"></span>
  </div>
</div>

核心CSS样式

通过绝对定位和过渡效果实现平滑切换：

.slideshow {
  position: relative;
  width: 800px;
  height: 400px;
  overflow: hidden;
}
.slides {
  display: flex;
  width: 300%;
  transition: transform 0.5s ease;
}
.slides li {
  width: 33.33%;
  list-style: none;
}
.controls {
  position: absolute;
  top: 50%;
  width: 100%;
}
.prev, .next {
  position: absolute;
  cursor: pointer;
  color: white;
  padding: 16px;
  font-size: 24px;
}
.next { right: 0; }
.dots {
  position: absolute;
  bottom: 20px;
  width: 100%;
  text-align: center;
}
.dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin: 0 5px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
}
.dot.active { background: white; }

纯CSS自动轮播方案

利用CSS动画实现无需JavaScript的自动播放：

@keyframes slide {
  0%, 30% { transform: translateX(0); }
  33%, 63% { transform: translateX(-33.33%); }
  66%, 97% { transform: translateX(-66.66%); }
}
.slides {
  animation: slide 9s infinite;
}

响应式设计调整

针对不同屏幕尺寸适配：

@media (max-width: 768px) {
  .slideshow {
    width: 100%;
    height: 200px;
  }
  .prev, .next {
    font-size: 16px;
    padding: 8px;
  }
}

增强视觉效果

添加过渡效果和悬停状态：

.slides img {
  transition: opacity 0.5s;
}
.slides img:hover {
  opacity: 0.9;
}
.controls a {
  transition: background 0.3s;
}
.controls a:hover {
  background: rgba(0,0,0,0.3);
}