找到style.css文件里缩略图的class名 .thumbnail .thumbnail{ position:relative; float:left; max-width:200px; height:auto; clear:both; margin:1px20px00; overflow:hidden; transition-duration:.5s; } 在{ }中间添加以下两行属性: //缩略图添加边框 border:1pxsolid#ccc; padding:4px; 添加后完整代码如下: .thumbnail{ position:relative; float:left; max-width:200px; height:auto; clear:both; margin:1px20px00; border:1pxsolid#ccc; padding:4px; overflow:hidden; transition-duration:.5s; } 自用的代码: [reply] .thumbnail{ position:relative; float:left; max-width:200px; height:auto; clear:both; margin:1px20px00; overflow:hidden; transition-duration:.5s; border-radius:8px; -webkit-box-shadow:rgba(0,0,0,0.496094)3px3px3px; } 如果出现手机端不兼容的情况请用下面代码试试(最简单直接建议使用): /*缩略图添加圆角和背影特效*/ .thumbnail{ border-radius:6px; box-shadow:rgba(0,0,0,0.5)3px3px3px; } [/reply] 效果如下: 首页幻灯片圆角 #sliderimg{ border-radius: 8px; } /**网站圆角样式集合**/ #slider img,.single-tag li a,#sliderimg,.cat-box,.cat-title,.fadeInUp,#sidebarh3,.cat-grid-title,.cat-square-title,.nbs-flexisel-container,img,h1,h2,h3,h4,h5,h6,a,.nav-menu,.nav-menu*,.type-cata,.child-cata,.link-alla {border-radius:8px } 备注缩略图阴影圆角效果要单独添加,上图样式可自行调整删减。