响应式卡片布局设计技巧

<div class="card-container">
  <div class="card">卡片1</div>
  <div class="card">卡片2</div>
  <div class="card">卡片3</div>
  <div class="card">卡片4</div>
</div>

.card-container {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding: 16px;
}
<p>.card {
flex: 1 1 250px; /<em> 最小宽度250px，可伸缩 </em>/
background: #f4f4f4;
border-radius: 8px;
padding: 20px;
text-align: center;
}</p>

.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  padding: 16px;
}
<p>.card {
background: #f4f4f4;
border-radius: 8px;
padding: 20px;
text-align: center;
}</p>

@media (max-width: 768px) {
  .card-container {
    padding: 10px;
    gap: 12px;
  }
  .card {
    padding: 16px;
    font-size: 14px;
  }
}
<p>@media (max-width: 480px) {
.card {
flex: 1 1 100%; /<em> 手机端占满一行 </em>/
}
}</p>

.card img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}
<p>.card h3 {
margin: 12px 0;
font-size: 1.1em;
}</p><p>.card p {
color: #666;
font-size: 0.9em;
}</p>