增加字体大小设置

uni_modules/uni-section/components/uni-section/uni-section.vue

@@ -5,8 +5,8 @@
         <slot v-else name="decoration"></slot>
 
         <view class="uni-section-header__content">
-          <text :style="{'font-size':titleFontSize,'color':titleColor}" class="uni-section__content-title" :class="{'distraction':!subTitle}">{{ title }}</text>
-          <text v-if="subTitle" :style="{'font-size':subTitleFontSize,'color':subTitleColor}" class="uni-section-header__content-sub">{{ subTitle }}</text>
+          <text :style="titleFontSize ? {'font-size':titleFontSize,'color':titleColor} : {'color':titleColor}" class="uni-section__content-title" :class="{'distraction':!subTitle}">{{ title }}</text>
+          <text v-if="subTitle" :style="subTitleFontSize ? {'font-size':subTitleFontSize,'color':subTitleColor} : {'color':subTitleColor}" class="uni-section-header__content-sub">{{ subTitle }}</text>
         </view>
 
         <view class="uni-section-header__slot-right">
@@ -53,7 +53,7 @@
 			},
       titleFontSize: {
         type: String,
-        default: '14px'
+        default: ''
       },
 			titleColor:{
 				type: String,
@@ -65,7 +65,7 @@
 			},
       subTitleFontSize: {
         type: String,
-        default: '12px'
+        default: ''
       },
       subTitleColor: {
         type: String,