Uczyń kartę Mat Scrolleble
.mat-card.scrollable-content {
overflow: hidden;
display: flex;
flex-direction: column;
}
.mat-card.scrollable-content > .mat-card-title-group {
display: block;
}
.mat-card.scrollable-content > .mat-card-content {
overflow-y: auto;
}
<!-- add this in the html -->
<mat-card class="scrollable-content">
</mat-card>
serhii.nahornyi