UI细节调整

src/components/StartCountdown.vue

@@ -5,10 +5,6 @@ const props = defineProps({
     type: Boolean,
     default: false,
   },
-  onFinish: {
-    type: Function,
-    default: () => {},
-  },
 });
 
 const count = ref(4);
@@ -20,7 +16,6 @@ watch(
       if (timer.value) clearInterval(timer.value);
       timer.value = setInterval(() => {
         if (count.value <= 1) {
-          props.onFinish();
           clearInterval(timer.value);
         }
         count.value -= 1;
@@ -46,8 +41,8 @@ onUnmounted(() => {
 
 <style scoped>
 .container {
-  position: fixed;
-  top: 120px;
+  position: absolute;
+  top: calc(50% - 50px);
   left: calc(50% - 30px);
 }
 .number {