element.style change

Hi, I am fairly new to HTML and CSS. my problem is that i add umbermenu plugin and after sticky menu to my site http://www.cydia.ge , and i wont change margin-bottom size, but i cannot do it whit css. it’s show me as element.style , and how i can edit this? element.style {
float: right;
height: 52px;
margin-bottom: 52px;
}

i add this code to my css but not works

.nav-sticky-wrapper[style] {
float: right;
height: 52px;
margin-bottom: 2px; !important;
}

or

#nav-sticky-wrapper.sticky-wrapper[style] {
float: right;
height: 52px;
margin-bottom: 2px; !important;
}

or

.sticky-wrapper[style] {
float: right;
height: 52px;
margin-bottom: 2px; !important;
}

please help me how i can change margin-bottom size.