饿了么element UIel-dialog弹出层/el-dialog修改默认样式不能在style scoped修改

如果在非scoped下，修改el-dialog自动添加的DIV类名的style加上important，可以覆盖原来的width，但这样会让整个项目的样式都乱套。

如果在scoped下修改style。所有的自定义样式都无法覆盖element的样式啊，加上important也不行，

<style scoped></style><el-dialog :title="titleStr" v-model="dialogFormVisible" custom-class = "dialog"><el-dialog :title="titleStr" v-model="dialogFormVisible" class = "dialog">重新命名class名，定义CSS样式<el-dialog title="新增孩子" v-model="addFormVisible" :close-on-click-modal="false"><el-form :model="addForm" label-width="85px" :rules="addFormRules" ref="addForm"><el-form-item label="姓名：" prop="ChildName"><el-input v-model="addForm.ChildName" auto-complete="off"></el-input></el-form-item><el-form-item label="性别：" prop="Gender"><el-radio-group v-model="addForm.Gender"><el-radio class="radio" label="1">男</el-radio><el-radio class="radio" label="2">女</el-radio></el-radio-group></el-form-item><el-form-item label="生日：" prop="Birthday"><el-date-picker type="date" placeholder="选择日期" v-model="addForm.Birthday"></el-date-picker></el-form-item></el-form><div slot="footer" class="dialog-footer"><el-button @click.native="addFormVisible = false">取 消</el-button><el-button type="primary" @click.native="addSubmit" :loading="addLoading">提 交</el-button></div></el-dialog>