app/assets/stylesheets/topic.css.scss
// Place all the styles related to the Topic controller here.
// They will automatically be included in application.css.
// You can use Sass (SCSS) here: http://sass-lang.com/
.ytplayerbox{
-moz-box-sizing: content-box;
box-sizing: content-box;
width: 390px !important;
object{
max-height: 100px !important;
max-width: 390px !important;
}
}