修改 图片大小

src/views/login/login.vue

@@ -4,7 +4,7 @@ import Vue from 'vue/types/umd';
   <div class="login">
     <div class="login-con">
       <div class="login-bg-img">
-        <img :src="bgImgPath" alt="" />
+        <van-image width="100%" height="400" :src="bgImgPath" fit="contain" />
       </div>
       <div class="login-btn">
         <van-button type="primary" size="large" round @click="onLogin" :color="$green" class="login-text"