Help with CSS edit in child

Hi thanks for the nice looking theme,
I’m having a little problem making some simple css changes work. Please take a look and tell me if I’m doing something wrong, I have no clue why it’s not working I’ve searched for other css in the theme that might possibly be overriding my style.css in the child but I can’t seem to locate it.

This is the code I’m using trying to change the color of the top-bar to #ddd and the background behind the logo and menu to a #ccc

I’m changing below

.menutop {
  background-color: #3498db;
}

To this:

.menutop {
  background-color: #dddddd;
}

Next I’m changing below

.logo, .firstdiv {
  background-color: #ffffff;
}

To this:

.logo, .firstdiv {
  background-color: #ffffff;
}

The above changes will not work. The below changes work just fine using my child style.css.

element.style {
  float: left;
  margin-bottom: 25px;
  margin-left: -105px;
  margin-top: 25px;
}

.social-icons img {
  margin-bottom: 4px;
  margin-left: 10px;
  margin-top: 10px;
  width: 20px;
}

Using firebug suggest the changes should be made on line 587 and 691 but for some reason I don’t see the code firebug suggest in the location it’s suggest.

If someone would please tell me what I’m doing I’d truly appreciate it.

The URL i’m working on is: https://www.wordpress-web-design-hosting.info/

Thanks in advance,
Fish