[Bug Report] el-select reset high hard coding problem

[chengda]

Element UI version

2.4.6

OS/Browsers version

any

Vue version

2.5.17

Reproduction Link

https://jsfiddle.net/mmx38qxw/5764/

Steps to reproduce

点击Test按钮，自定义样式中设置的el-select的高度会被硬编码覆盖。

What is Expected?

不使用硬编码覆盖

What is actually happening?

硬编码覆盖

[element-bot]

Translation of this issue:

Element UI version
2.4.6

OS/Browsers version
Any

Vue version
2.5.17

Reproduction Link
https://jsfiddle.net/mmx38qxw/5764/

Steps to reproduce
Click the Test button, and the height of the el-select set in the custom style will be hardcoded.

What is Expected?
No hard coded coverage.

What is actually happening?
Hard coded coverage