! doctypehtmlhtmllang=' en ' headmetacharset=' utf-8 ' metaname=' viewport ' content=' width=device-width,initi a padding: 0; } .lis{ display: flex; } .btn{ width: 80px; 文本对齐3360中心; margin: 5px; 背景色: # eee; position: relative; } .item{ display: none; 位置: absolute; }.item Li { border :1 px solid # e4a 616; margin: 0; padding: 0; 博德- top : none; line-height: 30px; width: 80px; 高: 30px; }.item Li : hover { background-color : # fa f1da; color: #cc9107; cursor: pointer; }/styledivclass=' Xia la ' ul class=' lis ' Li class=' BTN '微博ul class='item' li私信/li li评论@我/Li/ul li li class='btn '邮箱ul class='item' li私信/li li评论/Li@我/Li/Li/Li/Li/ul/divscriptvass I lis.leni I () { lis[i].onmouseover=function ) ) this.queryselector('.item ' ).style.display='block'}lis[I] .