The phrase "insignificant details" refers to small or unimportant pieces of information or facts that do not have much significance or impact on the overall situation or outcome. Full definition
The French and Spanish standards were slightly different in insignificant details. (k9puppydogs.com)
Even such insignificant details such as font for resume can say a lot about your character and they are a subtle way to showcase personality. (skillroads.com)
DO N'T include insignificant details about every job you've had. (pointroadgroup.com)