Is it Bug?~! text panel error

table{ width:100%; background-color: #101010; color: white; text-align: center; font-family: arial; } table td{ line-height:150%; }
项目名称 监控服务器总数 监控项目数量 监控项数量 触发器数量
监控统计 315 14 14159 5521

The above code showed error on Grafana v6.3.4 (a557646) ,
But showed normal on Grafana v5.1.4 (a5fe24fcc) .
How should I to rewrite it ?