css fixed center

Vuetify Components Alerts

<v-alert type="error" text dense close-text="Close Alert" dismissible v-show="true" v-model="x" class="alert-container">
  操作失败!
</v-alert>

.alert-container {
  position: fixed;
  top: 80px;
  right: 0;
  left: 0;
  width: 500px;
  margin: 0 auto;
  z-index: 99;
}