Change label font weight globally

Please if anybody know, how to change labels font weight globaly (something like configure using, for labels forms components, entry components) ?

Solution

.fi-fo-field-wrp-label {...}
.fi-in-entry-wrp-label {...}

.fi-fo-field-wrp-label {...}
.fi-in-entry-wrp-label {...}

.fi-fo-field-wrp-label {...}
.fi-in-entry-wrp-label {...}

.fi-fo-field-wrp-label {...}
.fi-in-entry-wrp-label {...}