fix button color and duration time

src/App.js

@@ -3,6 +3,7 @@ import {
   Button,
   Card,
   Col,
+  ConfigProvider,
   Divider,
   Form,
   Grid,
@@ -43,6 +44,7 @@ function App() {
   const [distance, setDistance] = useState([20, 50]);
   const [acceleration, setAcceleration] = useState(0);
   const [direction, setDirection] = useState(0);
+  const [durationUnit, setDurationUnit] = useState("seconds");
 
   const remainingTimeRef = useRef(0);
   const [remainingTime, setRemainingTime] = useState(0);
@@ -115,7 +117,7 @@ function App() {
             distance: distance,
             acceleration: acceleration,
             direction: direction,
-            duration: values.duration,
+            duration: values.duration * (durationUnit === "seconds" ? 1 : 60),
           },
           showNotification: messageApi,
         })
@@ -241,10 +243,11 @@ function App() {
               max={Constants.DURATION.MAX}
               addonAfter={
                 <Select
-                  defaultValue="seconds"
                   style={{
                     width: 120,
                   }}
+                  value={durationUnit}
+                  onChange={(value) => setDurationUnit(value)}
                 >
                   <Select.Option value="seconds">Sekunden</Select.Option>
                   <Select.Option value="minutes">Minuten</Select.Option>
@@ -336,14 +339,17 @@ function App() {
               </Col>
 
               <Col span={12}>
-                <Button
-                  type="primary"
-                  htmlType="submit"
-                  block
-                  style={{ backgroundColor: "#27ae60" }}
+                <ConfigProvider
+                  theme={{
+                    token: {
+                      colorPrimary: "#27ae60",
+                    },
+                  }}
                 >
-                  Start
-                </Button>
+                  <Button type="primary" htmlType="submit" block>
+                    Start
+                  </Button>
+                </ConfigProvider>
               </Col>
             </Row>
           </Form.Item>