Why doesn't my custom CSS work anymore on my menu?

I changed the default colors on my menu, but the changes stopped showing the other day, however, the CSS still shows the changes I made.

Here's the CSS:

[data-style=\\\\\\\\\\\\\\\\"burger\\\\\\\\\\\\\\\\"] ul.menu {
background: #FFBA00;
}
.responsive_nav_toggler {
    border: 0px solid #FFFFFF;
}
.responsive_nav_toggler > div {
    background: #1900d3;
}
.responsive_nav_toggler:hover {
    border: 1px solid #FFBA00;
}
.responsive_nav_toggler:hover > div {
    background: #1900d3;
}
[data-style=\\\\\\\\\\\\\\\\'burger\\\\\\\\\\\\\\\\'] .responsive_nav_toggler {
    background: #1900d3;
}

But here's what I'm seeing:

What should I do? Thanks!
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