portico: Fix text overflow on Zulip features page.
portico: Fix text overflow on Zulip features page.

This (hackishly) fixes a minor issue in the features page's responsive
design.

rht/zulip,jackrzhang/zulip,kou/zulip,dhcrzf/zulip,brainwane/zulip,synicalsyntax/zulip,shubhamdhama/zulip,timabbott/zulip,kou/zulip,tommyip/zulip,showell/zulip,timabbott/zulip,andersk/zulip,rht/zulip,jackrzhang/zulip,brainwane/zulip,rishig/zulip,zulip/zulip,timabbott/zulip,rishig/zulip,zulip/zulip,timabbott/zulip,rishig/zulip,dhcrzf/zulip,jackrzhang/zulip,eeshangarg/zulip,hackerkid/zulip,rht/zulip,rishig/zulip,shubhamdhama/zulip,rht/zulip,timabbott/zulip,hackerkid/zulip,tommyip/zulip,showell/zulip,jackrzhang/zulip,kou/zulip,rishig/zulip,tommyip/zulip,punchagan/zulip,synicalsyntax/zulip,andersk/zulip,jackrzhang/zulip,zulip/zulip,andersk/zulip,dhcrzf/zulip,tommyip/zulip,kou/zulip,dhcrzf/zulip,zulip/zulip,eeshangarg/zulip,hackerkid/zulip,eeshangarg/zulip,showell/zulip,brainwane/zulip,showell/zulip,shubhamdhama/zulip,dhcrzf/zulip,punchagan/zulip,zulip/zulip,zulip/zulip,shubhamdhama/zulip,andersk/zulip,tommyip/zulip,shubhamdhama/zulip,dhcrzf/zulip,rishig/zulip,brainwane/zulip,rht/zulip,showell/zulip,dhcrzf/zulip,hackerkid/zulip,punchagan/zulip,brainwane/zulip,andersk/zulip,punchagan/zulip,rishig/zulip,shubhamdhama/zulip,jackrzhang/zulip,andersk/zulip,punchagan/zulip,synicalsyntax/zulip,tommyip/zulip,eeshangarg/zulip,andersk/zulip,showell/zulip,brainwane/zulip,rht/zulip,punchagan/zulip,synicalsyntax/zulip,hackerkid/zulip,synicalsyntax/zulip,eeshangarg/zulip,zulip/zulip,timabbott/zulip,eeshangarg/zulip,shubhamdhama/zulip,hackerkid/zulip,brainwane/zulip,synicalsyntax/zulip,showell/zulip,eeshangarg/zulip,kou/zulip,kou/zulip,rht/zulip,kou/zulip,punchagan/zulip,timabbott/zulip,synicalsyntax/zulip,jackrzhang/zulip,tommyip/zulip,hackerkid/zulip