Stylish (http://userstyles.org/help/stylish) script to stop Remember The Milk being fixed width, and instead resize to the browser width

gistfile1.css

/* remove the fixed width from the overall page */
#content {
    width : auto;
    margin-left: 15px;
    margin-right: 15px;
}  

/* use proportion instead of pixels to specify size */
/*  of main list and the right info boxes           */
#listbox {
    width : 66%;
}  
#detailsbox {
    width : 31%;
}

/* remove fixed widths from other page elements */
#details, #detailswrap, #list, .notewidth, #detailsoverflow.has-overflow .notewidth, .taskcloud, .taskcloudbox, #keywrap, #detailsstatuswrap {
    width : auto;
}

.noteedittext, #detailsoverflow.has-overflow .notewidth.noteedittext, .noteedittext.notewidth {
    width : 100%;
}