CSS Code not pulling through on mobile

Hey guys, Im a bit stumped at the moment. I have this code that i have used to change the colour from blue to a grey tone. But before I had selected the grey tone I used a random colour. Now that i selected the correct colour, the desktop code shows grey, but on mobile its the random colour. How do i fix this?

CSS Code -

element.style {
}
#Header_wrapper, #Intro {
    background-color: #808080;
}


element.style {
}
#Subheader {
    background-color: rgba(11,0,55,1);
}
#Subheader {
    background-color: rgba(0,0,0,.02);
    background-position: center top;
    background-repeat: no-repeat;
    padding: 122px;
    position: relative;
}

You have not provided enough info to replicate the issue, so it’s not easy at all to help you

I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.

See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (').