sidebar widgets: smaller and not underlined

Hi everybody,

i just activated the qtranslate plug in.
Now the the widget sidebar makes my content smaller.
I managed to put the flags to the right with CSS:

.site-main .widget-area{
float: right;
overflow: hidden;
width: 20%;
}

But the sidebar seems to stay wide and I cant get the main content wider.
Anybody a code for that?

Second missing CSS code is to delete the underline in the sidebar.
I tried many which look like:

.widget-area .widget {
text-decoration: none;
}

Nothing works…

Hope someone can help!

Here you can have a look: https://www.bluedooragency.com