replace placeholder text on landing page app descriptions

app.py

@@ -129,8 +129,8 @@ with SinglePageLayout(server) as layout:
                             vuetify3.VIcon("mdi-radar", size=52, color="primary", classes="mb-4")
                             vuetify3.VCardTitle("Electromagnetic Scattering", classes="text-h5 mb-2")
                             vuetify3.VCardText(
-                                "Simulate electromagnetic wave scattering using quantum algorithms. "
-                                "Configure geometry, excitation, and visualize field propagation.",
+                                    "Simulate electromagnetic wave scattering using quantum Hamiltonian Simulation. \n The governing time-domain Maxwell equations are re-cast to Schrödinger-type equations and an equivalent Hamiltonian is computed, and evolved over time. "
+                                "\n \n Configure geometry, excitation, and visualize field propagation.",
                                 classes="text-body-2 mb-6",
                             )
                             vuetify3.VBtn(
@@ -146,10 +146,11 @@ with SinglePageLayout(server) as layout:
                     with vuetify3.VCol(cols=12, md=5, class_="d-flex"):
                         with vuetify3.VCard(elevation=4, classes="pa-6 flex-grow-1 landing-card"):
                             vuetify3.VIcon("mdi-water", size=52, color="secondary", classes="mb-4")
-                            vuetify3.VCardTitle("Quantum Lattice Boltzmann", classes="text-h5 mb-2")
+                            vuetify3.VCardTitle("Fluids", classes="text-h5 mb-2")
                             vuetify3.VCardText(
-                                "3D fluid simulation using Quantum Lattice Boltzmann Method. "
-                                "Explore advection-diffusion with quantum-enhanced computation.",
+                                "3D fluid simulation using a quantum analog the classical Lattice Boltzmann method."
+                                " Explore advection-diffusion with quantum-enhanced computation."
+                                " Configure geometry, initial condition, and visualize field propagation.",
                                 classes="text-body-2 mb-6",
                             )
                             vuetify3.VBtn(