Viewing github.com/facebook/react/packages/react-devtools-shared/src/devtools/views/DevTools.css

```
.DevTools {
```
```
  width: 100%;
```
```
  height: 100%;
```
```
  display: flex;
```
```
  flex-direction: column;
```

  background-color: var(--color-background);

```
  color: var(--color-text);
```
```
}
```
```
.TabBar {
```
```
  flex: 0 0 auto;
```
```
  display: flex;
```
```
  align-items: center;
```
```
  padding: 0 0.5rem;
```

  background-color: var(--color-background);

  border-top: 1px solid var(--color-border);

  font-family: var(--font-family-sans);

  font-size: var(--font-size-sans-large);

```
  user-select: none;
```
```
  /* Electron drag area */
```
```
  -webkit-app-region: drag;
```
```
}
```
```
.Spacer {
```
```
  flex: 1;
```
```
}
```
```
.TabContent {
```
```
  flex: 1 1 100%;
```
```
  overflow: auto;
```
```
  -webkit-app-region: no-drag;
```
```
}
```
```
.DevToolsVersion {
```

  font-size: var(--font-size-sans-normal);

```
  margin-right: 0.5rem;
```
```
}
```
```
.DevToolsVersion:before {
```

  font-size: var(--font-size-sans-large);

```
  content: 'DevTools ';
```
```
}
```
```
@media screen and (max-width: 400px) {
```
```
  .DevToolsVersion:before {
```
```
    content: '';
```
```
  }
```
```
}
```
```
@media screen and (max-width: 300px) {
```
```
  .DevToolsVersion {
```
```
    display: none;
```
```
  }
```
```
}
```
```
.DevTools, .DevTools * {
```
```
  box-sizing: border-box;
```

  -webkit-font-smoothing: var(--font-smoothing);

```
}
```

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