菜鸟网络开发人员在这里。我正在使用基于树的拖放文档：链接 实时示例：此处
我想改变"Search/DropDown bar"这张图片的高度和宽度
To be displayed like this: 
但是有一些问题，即使内联 css 也不起作用。
主要成分是DropdownTreeSelect
请参见下面的代码：
DropDown.js
import React, { Component } from "react";
import DropdownTreeSelect from "react-dropdown-tree-select";
import isEqual from "lodash/isEqual";
import "./DownloadNFT.css";
export default class Container extends Component {
constructor(props) {
super(props);
this.state = { data: props.data };
}
componentWillReceiveProps = (nextProps) => {
if (!isEqual(nextProps.data, this.state.data)) {
this.setState({ data: nextProps.data });
}
};
shouldComponentUpdate = (nextProps) => {
return !isEqual(nextProps.data, this.state.data);
};
render() {
const { data, ...rest } = this.props;
return (
<DropdownTreeSelect
className="mdl-demo"
data={this.state.data}
{...rest}
/>
);
}
}
尝试在 in-line 和 css 中进行许多更改，但样式searchbox/dropdown没有改变
下拉.css
/* fallback, until https://github.com/CompuIves/codesandbox-client/issues/174 is resolved */
@font-face {
font-family: "Material Icons";
font-style: normal;
font-weight: 400;
src: url(https://fonts.gstatic.com/s/materialicons/v36/flUhRq6tzZclQEJ-Vdg-IuiaDsNc.woff2)
format("woff2");
}
.material-icons {
font-family: "Material Icons";
font-weight: normal;
font-style: normal;
font-size: 54px;
line-height: 1;
letter-spacing: normal;
text-transform: none;
display: inline-block;
white-space: nowrap;
word-wrap: normal;
direction: ltr;
-webkit-font-feature-settings: "liga";
-webkit-font-smoothing: antialiased;
}
/* mdl-demo is a custom classname to increases the specificity of our styles. It can be anything.
* The idea is that it is easy to extend/override builtin styles with very little effort.
*/
.mdl-demo .dropdown-trigger > span:after {
font-size: 32px;
color: rgb(208, 255, 0);
}
.mdl-demo .toggle {
font: normal normal normal 18px/1 "Material Icons";
color: #555;
white-space: pre;
margin-right: 4px;
}