#19

Code is there! Now we need to decide what it will gonna do.
#9

- Set the correct texto to placeholders;
- Set the correct color to placeholders;
#8 + #10

- Text-size is already set to the value in the graphic project (32pt/2
= 16pt). Right now I’m reducing it to 14pt;

- Fix margins and paddings between .social and elements before and
after it;
- Space between icon and text now is a margin-right (To avoid underline
in the space before text);
#12
Style for input[type="submit"][disabled="disabled"]
indentation