They mostly believed that women would become political and devoted to causes and participating in politics which would lead them to abandon their duties towards their homes which was mostly about things like chores and being a housewife. This was the common belief among anti-suffragists, but there were also radicals who believed even worse things.
If you rapidly scroll your mouse back and forth over the box, (or ur finger) you will be able to read the message formed by all of the letters, which says "Click the 'V' in lives". So click on the letter V in the word "Lives"