Invisible Margin at the bottom of one list item

Hello everyone, I would like to have an invisible distance between the different list items. Can you help me?


        <ion-col size-xl="6" offset-xl="3" >
          <ion-card class="tasks" >
          <ion-item  class="taskbox" *ngFor="let item of items" [routerLink]="['/update-item',]"><ion-checkbox class="deletetask">
                {{ item.title }}


    --background-hover: #799696;
    --background: #4F7575 !important;
    --color: #ffffff;
    margin-bottom: 5%;
     box-shadow: none;

This is what it looks like now: