Kale Child Theme: different coloured hyperlinks

Hi – I am having trouble getting all of the hyperlinks on my site to be the same colour. I have changed the CSS to accommodate new colours, but not all hyperlinks are the same. On my home page there are some orange and some black. I want the hyperlinks to be orange to look at and green when you hover and for visited hyperlinks to remain orange. The CSS I am currently using relating to hyperlinks is below:

a {
color: orange; font-weight:bold
}
a:visited {
color: orange; font-weight: bold
}
a:hover {
color: #7BB79C; font-weight: bold
}

Grateful for any assistance you can provide.

The page I need help with: [log in to see the link]