修改确定按钮disabled样式

src/less/admin.less

@@ -170,11 +170,11 @@
 }
 
 
-.is-disabled[type=button] {
+.el-button--primary .is-disabled[type=button] {
   background: @adminBase;
   color: #fff
 }
-.is-disabled[type=button]:hover {
+.el-button--primary .is-disabled[type=button]:hover {
   background: @adminBase;
   color: #fff
 }