Hi,
I want to add check mark button so customers can sign up for newsletter on registration page, and I want to change the font size on the form title.Can someone please help me?
Store url :https://prettypleaseatelier.com
password: Naomi
Where I want to add the check mark 
the result I want
Hello @NaomiNN ,
You can try to follow these steps:
Go to Online Store → Themes → Actions → Edit code
Go to register.liquid or create-account.liquid file
Within the form, you’ll need to add a new input field for the newsletter subscription checkbox. Insert the following code snippet at an appropriate place within the form:
Go to Assets folder → base.css file
Add this following code at the bottom of page to resize the font size
.registration-title {
font-size: 24px;
}
Save and preview
Hope this can help. Let us know if you need any further support.
Transcy
Thank you so much, the first code worked but not the second do you have another one to modify the registration title and the connexion page title ?
it is possible to add a space between the check box and the password ?
There is no space
Hello @NaomiNN ,
You can try these steps again:
Before adding the code to modify the font size in Assets folder. Go to register.liquid file
# Welcome to Our Store Registration
Open the login.liquid file and locate the HTML tag that contains the login page title. It is typically an
Apply the same process.
To add a space, go to Assets folder → base.css file
Add this following code
.form-group {
margin-bottom: 10px;
}
Note: Adjust the value as needed
Save and preview
Let us know if you can make it.
Transcy
It’s not working I can’t reduce the size or add a space on top of the box.
the code duplicate the title
The code for the font worked thank you. 
For the space it’s still not working.
Hey @NaomiNN ,
If you are still having trouble getting this set up, you could also try using an app such as Helium Customer Fields, which allows you to build fully custom registration forms to collect information such as newsletter signup, birthday, gender, or anything else!
