Function getComputedPixels

getComputedPixels<T extends readonly (keyof CSSStyleDeclaration)[]>(
elOrQuery: string | HTMLElement,
...properties: T,
): ComputedPixelsMap<T>
Returns the computed measurements of CSS properties via getComputedStyle.
```
const v = getComputedPixels(`#some-el`, `borderTopWidth`, `borderLeftWidth`);
v.borderTopWidth;  // number
b.borderLeftWidth; // number
```
Throws an error if value from getComputedStyle is not a string or does not end in 'px'.
Type Parameters
- Textendsreadonly (keyof CSSStyleDeclaration)[]
Parameters
- elOrQuery: string | HTMLElement
- ...properties: T
Returns ComputedPixelsMap<T>