1、新建html文档。
3、书写css代码。.barrage{position: fixed;bottom:70px;right:幻腾寂埒-500px;display: inline-block;width: 500px;z-index: 99999}.barrage_box{background-color: rgba(0,0,0,.5);padding-right: 8px; height: 40px;display: inline-block;border-radius: 25px;transition: all .3s;}.barrage_box .portrait{ display: inline-block;margin-top: 4px; margin-left: 4px; width: 32px;height: 32px;border-radius: 50%;overflow: hidden;}.barrage_box .portrait img{width: 100%;height: 100%;}.barrage_box div.p a{ margin-right: 2px; font-size: 14px;color: #fff;line-height: 40px;margin-left: 18px; }.barrage_box div.p a:hover{text-decoration: underline;}.barrage_box .close{visibility: hidden;opacity: 0; text-align: center; width:25px;height: 25px;margin-left: 20px;border-radius: 50%;background:rgba(255,255,255,.1);margin-top:8px; background-image: url(close.png);}.barrage_box:hover .close{visibility:visible;opacity: 1;}.barrage_box .close a{display:block;}.barrage_box .close .icon-close{font-size: 14px;color:rgba(255,255,255,.5);display: inline-block;margin-top: 5px; }.barrage .z {float: left !important;}.barrage a{text-decoration:none;}
5、代码整体结构。
