Scrolling down an image with ion-content

Ionic Framework ionic-v3
1

Hi
I have the image
scss

.myview {
    .scroll-content{
    background-image: url('../assets/imgs/04.png');
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-size: cover;

    }
  }

I want to be able to go down
how can I do it? with

<ion-content class="myview"  overflow-scroll="true">
</ion-content>