If there is no association between variables in the population, then the odds ratio in the population would be 1.00.
In your sample, you have an odds ratio 0.88, which of deviates from 1.00. A 95% confidence interval was constructed.
Without going into details, if the 95% confidence interval includes the value expected under the null hypothesis (here:
the value 1.00 for "no association") then you cannot reject the null hypothesis ("not significant"). In the current example,
1.00 is included in the interval.
With kind regards
Karabiner