Changing the colors of a element style

no matter what I put in custom css I cannot change the color of this element.
element.style {
width: 50px;
border-color: #efbb20;
}

<span class=”hr-inner inner-border-av-border-fat” style=” width:50px; border-color:#efbb20;”><span class=”hr-inner-style”></span></span>

my css

.hr-inner.inner-border-av-border-fat {
border-color: #e4610f;
}

if I put:
.hr-inner.inner-border-av-border-fat {
display: none;
}

It goes away, but I want it, just want to change the color.

Where is this in the theme settings?

Please help!

My website is not live yet so I didn’t send the link. I am making changes to the construction site demo, if that helps?