修改IE下按钮显示bug(3392)

src/css/participle.less

@@ -99,6 +99,7 @@
             text-align: center;
             border-radius:4px;
             font-size: 14px;
+            display: inline-block;
         }
         .resultBox{
             white-space: pre-wrap;
@@ -205,6 +206,8 @@
         }
         .disabled{
             opacity: 0.5;
+            filter: "alpha(opacity=50)";
+            filter: alpha(opacity=50);
         }
         .empty{
             position: absolute;