Expansion-panel from material angular 4

Question

I hava an angular 4.4.4 application with material 2.0.0-beta.12 and I want to use the mat-expansion-panel from material design.

This is my code

Answer 1

if you add it to the main styles.scss it works (not at the component style level)

.mat-expansion-panel-body {
    padding: 0;
}