# 修改平台LOGO
## js
```
// 顶部区域shortcut为"dec.header"
BI.Plugin.registerObject("dec.header", function (widget) {
//  取到logo对应的dom元素
var logo = widget.element.find("img");
//  添加类名
logo.addClass("plugin-logo");
});
```
## css
```
.plugin-logo {
  cursor: pointer;
  transform: rotate(0deg);
  transition: transform .3s ease;
}

.plugin-logo:hover {
  width: 30px !important;
  height: 30px !important;
  transform: rotate(180deg);
  transition: transform .3s ease;
}
```

## 效果
![](../screenshorts/1.gif)