app/assets/stylesheets/update_histories.css.scss
// Place all the styles related to the update_histories controller here.
// They will automatically be included in application.css.
// You can use Sass (SCSS) here: http://sass-lang.com/
.update-history-table {
colgroup:first-child {
width: 50%;
}
colgroup:last-child {
width: 50%;
white-space: nowrap;
}
}