If adjust the dropdown's part in the css, other portion of the page will be affected.

You can set a width to the option name of the first part at the left side, and this make a clear look to the the dropdown at the right side.
.optionName {
width: 16em; /* should set a width which ssufficient for all the option names */
}
If still want the text to right align for the option name.
in the above css add the following:
text-align: right;
.