[TOC] ## 响应式图片 ``` <img src="..." class="img-responsive" alt="Responsive image"> ``` > 就是设置`max-width: 100%;、 height: auto; 和 display: block;` ## 图片形状  ``` <img src="..." alt="..." class="img-rounded"> <img src="..." alt="..." class="img-circle"> <img src="..." alt="..." class="img-thumbnail"> ```