Newsletter sign-up form with success message

i faced many difficulties i m sad a little but no probleme: 1)i didnt know what to do for the tick list and their content i tried everything but the flex bow and the aligne didnt work

1. again i tried to mesure the size of the fonts but no solution i keep getting a different font size from the original

2. in the success box i didnt know how to put a gap or a spacing between the lignes in the paragraph

3. this is the main difficulty : i tried the media query but i didnt know what to do i keep getting a random designe i dont know why and how to change the photo from the desktop one to the mobile one and again it didnt work i tried undesplaying one and keeping the other but no unluckly

=>just some last word i loved this challenge even if i didnt made it as it should be i did this challnge for 2 days i m happy with it but i need help i really need help and how to use media queries correctly