Issues adding social icons (Strava and Youversion)

Good afternoon,

I’m having issues adding a Strava social icon to my header. 

The url-link works, but the Strava icon is not visible. I used the code below.

I also want to add a bible.com social media icon: https://blog.youversion.com/2015/03/youversion-announces-new-bible-app-feature-verse-images/bible-app-icon-512-en/

I don't now how to upload a custom made icon and where to find the url to this icon.

I appreciate your help. Thanks.

header#header [href*="strava"] svg {

display:none;

}

header#header [href*="strava"] {

background-image: url(https://static1.squarespace.com/static/64509c14481e4e2dc47465b4/t/652185b7d4fcb0001aa3190d/1696695735215/4691462_strava_icon-3.png);

background-size: 100%;

background-repeat: no-repeat;

}

Hi,

What is your site url? We can check problem easier