Ngx-charts: Persistent hover gradient in line chart

[pablosproject]

I'm submitting a ... (check one with "x")

• [ ] bug report - search github for a similar issue or PR before submitting
• [ ] feature request
• [x] support request - use StackOverflow (add the ngx-charts tag) or the gitter chat for support questions

Current behavior
On highlighting a point in the graph, a nice gradient background is added to the series. Is there a way to make it persistent?

Please tell us about your environment:
Mac OSX 10.14.2

• ngx-charts version:
  10.0.0

• Angular version: x.x.x
  7.2.2

• Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]
  , Chrome 71.0.3578.98

• Language: [all | TypeScript X.X | ES6/7 | ES5]
  Typescript

[KingDarBoja]

On your scss/css file, place this code:

.ngx-charts .line-highlight {
    display: block;
}

I highly recommend placing the chart inside a _.chart-container_ class to increase the selector specificity to override the default display: none property.

Cheers!

[qortex]

Had to use !important to get it taken into account:

.ngx-charts .line-highlight {
    display: block !important;
}