In the analyze$08.$html file, add a submit button below the second fieldset and include the class attribute with a value of btn$.$

Add a placeholder attribute with a value of MM$/$YY to the expDate input.

Add the following style rules for a mobile viewport.

Create a style rule for the fieldset and input elements that sets the bottom margin to $2\%.$

Create a style rule for the fieldset legend that sets the font size to $1\mathrm{.}25$em and makes the font bold $.$

Create a style rule for the btn class selector that removes the border, sets the top and bottom margin to zero and the left and right margin to auto $,$ sets the display to a block $,$ sets the padding to $5\%,$ sets the background color to $003399,$ sets the font size to $1\mathrm{.}25$em $,$ sets the border radius to $10$px $,$ and sets the color to white $($fff$).$

Add the following style rules to the tablet media query.

Create a style rule for the form element that sets the width to $80\%,$ sets the top and bottom margins to zero, and the left and right margins to auto $.$

Create a style rule for the grid class that sets the display to a grid, sets the grid template columns value to auto auto $,$ and sets the grid gap to $20$px $.$

Create a style rule for the btn class that sets the grid column value to $1/$ span $2$ and padding to $3\%.$