Is there a way to modify the content of a popover?

Ionic Framework ionic-v3
1

Ihave an ion select in my poover, I want to modify the content by doing a padding inside it is there a way to do it ?

Tried to modify the css, unfortunately this is not working

.popover .scroll-content{
left:400px !important;
padding-left: 155px;
border-radius:45px !important;
overflow: visible!important;}

.popover-content
{
left:400px !important;
border-radius:45px !important;
background-color: red !important
}