problems editing headers

Good afternoon I inserted in the Endfold section theme options – general style – Logo Area Heading – CSS
this code:

#top .av_header_transparency {
background: rgba (0, 0, 0, 0.6);
}

the fact that I no longer want it to be transparent but simply white – to do this I have eliminated the css code and selected the color #ffffff in the background color area of ​​the logo – but in the site preview – the background remains transparent without the presence of the css code ? why? deleting the css code and selecting the color #ffffff should not return white without transparency – I have tried several times but nothing done – Header remains transparent.

My question can you enter the wordpress installation and see if there is any parameter entered that is selected and that I escaped from the control?

I attach 4 photos below.

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thanks