看下面的代码可以看到我设置了css样式，但是我去掉过，还是无法显示。。。

阳光沙滩的验证码就显示的这么爽，怎么样也能让我的验证码正常显示呢，图片在下面，可能有东西没交代清除，可以留言我给补上。感谢来帮忙的大佬们，ヽ(￣ω￣(￣ω￣〃)ゝ

<el-form-item label="验证码：" required style="background: aliceblue;text-align: center">
    <div class="verifyCodeRow">
    <el-input v-model="loginInfo.captcha" placeholder="请输入右侧验证码"
              @keydown.enter.native="doLogin"></el-input>

    </div>
</el-form-item>
<el-form-item>
<img id="captchaImg" class="vv-img" :src="captchaPath" @click="updateVerifyCode">
</el-form-item>
<el-form-item>
    <el-button type="primary" style="margin-top: 17px"  @click="doLogin">提交</el-button>

</el-form-item>

updateVerifyCode(){
    //todo:上线记得改
    this.captchaPath = 'http://localhost:9000' + '/user/captcha?captcha_key=' + Date.parse(new Date());
    this.loginInfo.captcha_key = this.captchaPath.substring(this.captchaPath.lastIndexOf('=') + 1);

    let captchaImg = document.getElementById('captchaImg');
    captchaImg.style.setProperty('box-shadow', '0 0 0 #fff');
    captchaImg.style.setProperty('transition', 'all 1s cubic-bezier(0.02, 0.3, 0.58, 1.82)')
    setTimeout(function () {
        captchaImg.style.setProperty('box-shadow', '5px 5px 4px black');
    },1000)
},