feat:趋势样式调整

src/views/exa/HistoryLine.vue

@@ -60,8 +60,9 @@ watch(
         text: props.title,
         show: true,
         textStyle: { // 设置主标题的文字风格
-          fontFamily: 'sans-serif', // 字体系列
+          fontFamily:
-          fontWeight: 350,
+            '"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif',
+          fontWeight: 600,
           color: 'black', // 字体颜色
           fontSize: 16, // 文字大小
         },
@@ -87,7 +88,7 @@ watch(
       // 网格
       grid: {
         x: '2%',
-        y: '5%',
+        y: '10%',
         x2: '2%',
         y2: '10%',
         containLabel: false,