How to add html fieldset with layout

Vaadin 6 / 7 / 8 Framework UI
1

I want to create fieldset like in here http://www.w3schools.com/TAGS/tryit.asp?filename=tryhtml_fieldset
I know this is basic html but I don’t known any layout what support fieldset.
Is it this possible do without doing own widgetset.

2

I resolved this problem doing like below:

Layout layout;
Form form = new Form(layout);

…and changed style

.v-form fieldset {
border:1px solid #FF0000;
padding:6px;
}