Latest update breaks design

Hi there,

the latest update of the free version breaks our website design, more precisely our form designs using fieldsets and legend-tags.
What can we do about it?

Thanks

It is the following lines that break the design (lines 1642-1653) of the front.css file. I commented them out and now it works again, but that is nothing but a workaround.

/* fieldset {
    border: 1px solid #dddddd !important;
    padding: 10px;
    border-radius: 3px;
}

legend {
    font-weight: bold;
    font-size: inherit; color: inherit;display: inline;float: left;padding: 10px !important;
    border-bottom: 1px solid #dddddd !important;

} */