基于jQuery实现下拉收缩(展开与折叠)特效

jQuery下拉收缩特效 body { margin: 0 auto; padding: 0; width: 570px; font: 75%/120% Arial, Helvetica, sans-serif; } a:focus { outline: none; } #panel { background: #69C7F7; height: 200px; display: none; } .slide { margin: 0; padding: 0; border-top: solid 4px #F27613; } .btn-slide { background: #F27613 url