This is a demo of the new treemap diagram type in Mermaid.
treemap
"Root"
"Branch 1"
"Leaf 1.1": 10
"Leaf 1.2": 15
"Branch 2"
"Branch 2.1"
"Leaf 2.1.1": 20
"Leaf 2.1.2": 25
"Leaf 2.2": 25
"Leaf 2.3": 30
treemap
"Technology Stack"
"Frontend"
"React": 35
"CSS": 15
"HTML": 10
"Backend"
"Node.js": 25
"Express": 10
"MongoDB": 15
"DevOps"
"Docker": 10
"Kubernetes": 15
"CI/CD": 5