if we take a 1961/1962 nuclear war, Scenario including Nuclear winter and Ecological collapse.
the world would
very different of our world.
let start with music
No Beatles or Roiling Stones, they died as all major city in great Britain were nuked.
Here Brain Wilson and his "the Beach Boys" fill up the void, if Los Angeles is mis by soviet R-7 ICBM.
values and morals
it will be "survive or die" mentality under the people
yes some people will try help others like clergy, but ones the supply are run empty. Then the Dark side of Humans surfaced.
Society have to take "Zero tolerance" law and order, to keep things in order, including public execution of criminals.
Living
with massive refugee crisis (bigger then the migration wave at end of roman empire)
first, people will be packed with the dozen in one room, making a one family house a refugee camp with hundred people !
later with build of new prefab housing, those "refugee camp" are empty and demolish.
In those new "Home" the People will have livingspace similar to Japanese housing,: Minimal
and very similar in layout entrance store of protective clothes and shoes, to prevent contamination of home.
Fashion
people will wear two divergent set of clothes
one protective for outside (radiation, acid rain etc) how is stored in entrance of Home.
the other will be fashion clothes for inside living
i bet the protective clothes will be also fashion victims.
Food
here will be massive changes in taste and eating habits, do lack of Animals become extinct during war or radioactive contamination.
Birds like chicken could become new dodos in museums.
under those condition hungry People will eat anything.
it would not surprise me, if in Restaurants of Post war time will have on there menu: Dog goulash, roasted Guinea pigs or rats.
or they goes step further and develop synthetic Food from oil
about a wide variety of goods in Post war time, forget it
you will not find 37 types of Ketchup here, if you lucky there will one or two to choose from.
TV and Movie
it repeat post ww2 time in Germany, people will seek light entertainment to forget, means: Light comedy, Musicals and schmaltzy love story with happy ending.
it will take some time for real time drama come to cinema near you
by the Way
The Weather Forecast will include daily Fallout warning and Radiation levels