[Bug Report] Dialog fullscreen attribute problem

[zihe-xu]

Element UI version

2.4.5

OS/Browsers version

win10

Vue version

2.5.17

Reproduction Link

https://jsfiddle.net/xslmenghuan/qfa8ochw/

Steps to reproduce

Dialog 如果同时设置了,width和fullscreen,Dialog 的宽度会优先使用width,而不是全屏,

What is Expected?

fullscreen时,css优先级高于width

What is actually happening?

fullscreen时,css优先级高于width

[element-bot]

Translation of this issue:

Element UI version
2.4.5

OS/Browsers version
Win10

Vue version
2.5.17

Reproduction Link
https://jsfiddle.net/xslmenghuan/qfa8ochw/

Steps to reproduce
If Dialog is set at the same time, the width of width and fullscreen, Dialog will give priority to the use of width instead of full screen.

What is Expected?
At fullscreen, the CSS priority is higher than width

What is actually happening?
At fullscreen, the CSS priority is higher than width