Hi @yoizen
I hope you are doing well.
This will require some custom CSS, you can try the following:
.forminator-ui{
display: flex;
align-items: center;
}
.forminator-row:not(.forminator-row-last) input{
border-radius: 30px !important;
padding: 14px !important;
}
.forminator-row:not(.forminator-row-last){
flex: 1;
}
.forminator-ui .forminator-row-last{
margin-top: -14px;
transform: translatex(-124px);
}
.forminator-ui .forminator-row-last button{
border-radius: 20px !important;
}
Add to Form > Appearance > Custom CSS:
https://monosnap.com/file/RAGJKQblReAPKxKbjjTSx5LeJp5xBR
But this is a start point you may need to adjust the values to match your site and create media queries for responsive. I am also assuming you only have the email + submit button, if you share the front end form URL we can share a more accurate code.
Let us know if you have any additional questions.
Best Regards
Patrick Freitas