Radio button and check box horizontal alignment issue question

I have recently worked on two new themes using blueprint and I have noticed that form checkboxes and radio buttons fall out of alignment with text on the same line. The form elements fall below the text.

I was able to override some styles to get alignment to work using the code below. I also included two screenshots to help visualize the issue.

The problem is that I believe I am overriding styles in screen.css and blueprint.css. I figure this isn't ideal. Has anyone else seen this? Thanks much!

input[type=checkbox], input[type=radio], input.checkbox, input.radio {
position: relative;
top: 0;
}

textarea, input {
vertical-align: inherit;
}