fix #5689

src/pages/activity/detail/poster.js

         fontSize: 30,
         color: 'black',
         baseLine: 'middle',
-        lineNum: 2,
+        lineNum: 1,
         lineHeight: 48,
         // textAlign: 'center',
         width: 560,
         fontSize: 28,
         color: '#999',
         baseLine: 'middle',
-        lineNum: 2,
+        lineNum: 1,
         lineHeight: 48,
         width: 560,
         zIndex: 999

src/pages/news/detail/poster.js

         fontSize: 30,
         color: 'black',
         baseLine: 'middle',
-        lineNum: 2,
+        lineNum: 1,
         lineHeight: 48,
         // textAlign: 'center',
         width: 560,
         fontSize: 28,
         color: '#999',
         baseLine: 'middle',
-        lineNum: 2,
+        lineNum: 1,
         lineHeight: 48,
         width: 560,
         zIndex: 999

src/pages/project/detail/poster.js

         fontSize: 28,
         color: '#999',
         baseLine: 'middle',
-        lineNum: 2,
+        lineNum: 1,
         lineHeight: 48,
         // textAlign: 'center',
         width: 560,
         color: '#999',
         baseLine: 'middle',
         lineHeight: 48,
+        lineNum: 1,
         width: 150,
         zIndex: 11
       },