解决ElementUI自定义CSS样式不生效的问题

<el-input
        ref="mySearch"
        class="mySearch"
        size="small"
        placeholder="请输入内容"
        suffix-icon="el-icon-search"
        v-model="input1">
</el-input>

<style scoped lang="stylus" rel="stylessheet/stylus">
    .mySearch .el-input__inner
        border-radius 20px
</style>

<style scoped lang="stylus" rel="stylessheet/stylus">
    .mySearch /deep/ .el-input__inner
        border-radius 20px
</style>