Cómo agregar atributos de estilo múltiple en el elemento React
style is just an Object, with css value turn to camelCase, so you could use any way to merge two object, and it should work.
ES6: style={Object.assign({}, style1, style2)}
ES7: style={{...style1, ...style2}}
lodash: style={_.merge({}, style1, style2)}
Kami