css制作搜索图标

使用伪元素创建搜索图标

通过CSS的::before或::after伪元素结合边框旋转可以绘制放大镜图标：

.search-icon {
  position: relative;
  width: 20px;
  height: 20px;
}
.search-icon::before {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border: 2px solid #333;
  border-radius: 50%;
  left: 0;
  top: 0;
}
.search-icon::after {
  content: "";
  position: absolute;
  width: 2px;
  height: 8px;
  background: #333;
  transform: rotate(-45deg);
  right: 0;
  bottom: 0;
}

使用背景渐变实现

CSS线性渐变可创建简洁的搜索图标：

.search-box {
  width: 24px;
  height: 24px;
  background:
    radial-gradient(circle, transparent 30%, #000 30%, #000 38%, transparent 38%),
    linear-gradient(to bottom right, transparent 45%, #000 45%, #000 55%, transparent 55%);
  transform: rotate(45deg);
}

SVG内联方案

直接在HTML中嵌入SVG并通过CSS控制样式：

<span class="search-svg">
  <svg viewBox="0 0 24 24" width="24" height="24">
    <path d="M15.5 14h-.79l-.28-.27a6.5 6.5 0 1 0-.7.7l.27.28v.79l5 5 1.5-1.5-5-5zm-6 0a4.5 4.5 0 1 1 0-9 4.5 4.5 0 0 1 0 9z"/>
  </svg>
</span>

.search-svg svg {
  fill: currentColor;
  transition: transform 0.2s;
}
.search-svg:hover svg {
  transform: scale(1.1);
}

字体图标方案

使用现成的图标字体库（如Font Awesome）：

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
<i class="fas fa-search"></i>

通过CSS自定义样式：

.fa-search {
  color: #555;
  font-size: 1.2rem;
  transition: all 0.3s ease;
}
.fa-search:hover {
  color: #000;
  transform: rotate(10deg);
}

动画交互效果

为CSS创建的图标添加悬停动画：

.animated-search {
  position: relative;
  width: 24px;
  height: 24px;
  transition: all 0.5s;
}
.animated-search::before,
.animated-search::after {
  content: "";
  position: absolute;
  transition: all 0.5s;
}
.animated-search::before {
  width: 12px;
  height: 12px;
  border: 2px solid #3498db;
  border-radius: 50%;
  left: 0;
  top: 0;
}
.animated-search::after {
  width: 2px;
  height: 8px;
  background: #3498db;
  transform: rotate(-45deg);
  right: 3px;
  bottom: 1px;
}
.animated-search:hover {
  transform: scale(1.2);
}
.animated-search:hover::before {
  border-color: #e74c3c;
}
.animated-search:hover::after {
  background: #e74c3c;
}