Hi there I dont know what is wrong with this but I am trying to float a submit button to the left and I cant. I have tried for nearly 3 hours.

This is the html:

HTML Code:
<input type="submit" name="Submit2" class="button" value="Send Email" />
This is the css

HTML Code:
#contact_form .button {
	margin-right: 300px;
	overflow: hidden;
	float: left;
}
.button {
	float: left;
}