webpage font messed up after child theme is created

hello

i am on twenty-twelve theme

so i was building my website, already had some .css, functions.php and customheader.php modifed/edited for the past one week. then suddenly…. realized i shouldnt be doing all these customization in parents theme file, but should have created child theme to do all these modification

so i created the child theme today (a new .css file), also copy the customheader.php file, and created a new functions.php file

please take note, because i created my child theme halfway through, so i think i believe the .css file, customheader.php file, and functions.php is not genuine or 100% pure. if you get what i mean

everything seems fine… with the website loading on child theme. except, now the font size in my ABOUT ME, FAQ, FAVORITE, CONTACT pages are much larger than what it used to be.

can anyone please tell me where should i fix? i think i should be putting in some new codes into the child theme’s .css file. i tried doing so based on what i remembered what i altered in the now-parent .css file.

but after doing all that, but the font size on those pages i mention is not appearing smaller consistently. sometimes big sometimes small. and some pages have bigger font and the other

so i think some coding is getting messed up or confused. Please help!

/*
Theme Name: Twenty Twelve Child
Theme URI: https://travelmolecule.com/blog/twenty-twelve-child/
Description: Twenty Twelve Child Theme
Author: Travel Molecule
Author URI: https://travelmolecule.com/blog
Template: twentytwelve
Version: 1.0.0
Tags: light, dark, two-columns, right-sidebar, responsive-layout, accessibility-ready
Text Domain: twenty-twelve-child
*/

@import url(“../twentytwelve/style.css”);

/* =Theme customization starts here
.entry-content p,
.entry-summary p,
.comment-content p,
.mu_register p {
margin: 0 0 24px;
margin: 0 0 1.714285714rem;
font-size: 16px;
font-size: 0.857142857rem;
line-height: 1.714285714;
}
a:link {
color:#0000FF;
}

a:visited {
color:#800080;
}

a:hover {
color:#FF0000;
}
*/