Added collapse component

src/app/collapse/collapse.component.scss

@@ -0,0 +1,37 @@
+
+@import '../../styles.scss';
+
+.wrapper {
+  overflow: hidden;
+  background-color: $light;
+  border-radius: 0.5rem;
+  padding: 1rem;
+}
+
+.heading {
+  display: flex;
+  justify-content: space-between;
+}
+
+h3 {
+  width: 80%;
+  margin: 0;
+}
+
+span {
+  font-size: 2rem;
+}
+
+.collapse {
+  padding-left: 3rem;
+  border-left: 2px solid $secondary-color;
+  max-height: 20rem;
+  transition: max-height 0.5s ease-in;
+  overflow: hidden;
+}
+
+.collapsed {
+  max-height: 0rem;
+  overflow: hidden;
+  transition: max-height 0.5s ease-in;
+}