Semantic-ui-react: select and dropdown not work if just import correspond css file

[jomalonejia]

i wanna just import a dropdown component in my react project, but it not work,
if just import 'semantic-ui-css/components/dropdown.css'
it would not work like this (click it and the item list would not show)

if import 'semantic-ui-css/semantic.css'

it worked now , but the other style would been changed ,i don't like this,
i tried to import some compoents ,but also not work

so , how can fix it ? thanks

[layershifter]

Please use SO questions. Dropdown also requires CSS from Transition.

[jomalonejia]

i have soluted it :)
the dropdown component need three css file : dropdown.css transition.css and reset.css