$ sudo dpkg -i opera-stable_36.0.2130.32_i386.deb
dpkg: regarding opera-stable_36.0.2130.32_i386.deb containing opera-stable:i386, pre-dependency problem:
 opera-stable:i386 pre-depends on apt-transport-https
  apt-transport-https is not installed.

dpkg: error processing archive opera-stable_36.0.2130.32_i386.deb (--install):
 pre-dependency problem - not installing opera-stable:i386
Errors were encountered while processing:
 opera-stable_36.0.2130.32_i386.deb