Problem with the menu

Good Morning,

I Have probem with the menu you can look two screen here :

http://www.noelshack.com/2016-18-1462140491-capture-d-ecran-2016-05-02-a-00-06-34.png (in this one i just wan’t in one line)
http://www.noelshack.com/2016-18-1462140491-capture-d-ecran-2016-05-02-a-00-06-41.png (with this one the menu is cut)

I had this code in my CSS :

.av-main-nav #menu-item-3484 ul {
left: -130px;
}
li#menu-item-3407 ul.sub-menu {
width: 100%;
}
.current-menu-item > a > .avia-menu-fx {
display: none;
}
{
font-family: ‘din_lightregular’, Tahoma, Geneva, sans-serif;
color: #ffffff;
font-size: 13px;
line-height: 1.4em;
}

But it’s doesn’t work.

Best Regard,
Noé