Modifying Backgrounds

To modify backgrounds, you can use various techniques depending on the specific requirements. Here are some general approaches:

* Holley Pro Dash Backgrounds: You can customize the background of your Holley Pro Dash by modifying the default layouts or using third-party modifications.
* Blazor .NET: To show a loading spinner while performing a heavy query in Blazor .NET, you can use the `@await` keyword and the `LoadingSpinner` component from the `BlazorLoadingSpinner` package.
* HTML Table Background Color and Round Corners: If you want to change the background color of table cells and add round corners, you can use CSS properties such as `background-color`, `border-radius`, and `box-shadow`.

Here's an example code snippet for modifying backgrounds in Blazor .NET:

```csharp
@using BlazorLoadingSpinner

<LoadingSpinner />
```

And here's an example code snippet for modifying Holley Pro Dash backgrounds:

```csharp
<!-- Default background -->
<div class="holley-pro-dash-background"></div>

<!-- Custom background -->
<div class="custom-holley-pro-dash-background">
<!-- Your custom content here -->
</div>
```

You can also use CSS to modify the background colors and add round corners to table cells:

```css
table {
border-collapse: collapse;
}

th, td {
border: 1px solid black;
padding: 10px;
text-align: left;
}

th {
background-color: #f0f0f0;
border-bottom: 2px solid black;
}

td {
background-color: #fff;
border-bottom: 1px solid black;
}

td:hover {
background-color: #f5f5f5;
}
```

These are just a few examples of how you can modify backgrounds. The specific approach will depend on your requirements and the technology stack you're using.