diff --git a/README.md b/README.md
index 888b581..e4c7e6a 100644
--- a/README.md
+++ b/README.md
@@ -2,11 +2,13 @@
 
 [![CI](https://github.com/demostf/demos.tf/actions/workflows/build.yml/badge.svg)](https://github.com/demostf/demos.tf/actions/workflows/build.yml)
 
-Frontend code for [demos.tf](http://demos.tf), see also [the api code](https://github.com/demostf/api) for the api backend.
+Frontend code for [demos.tf](http://demos.tf), see also
+[the api code](https://github.com/demostf/api) for the api backend.
 
 ## Docker image
 
-A prebuild docker image exist in the [docker hub](https://hub.docker.com/r/demostf/frontend/).
+A prebuild docker image exist in the
+[docker hub](https://hub.docker.com/r/demostf/frontend/).
 
 ## Building
 
@@ -63,4 +65,5 @@ username = "demostf"
 password = "XXXXXXXXXX"
 ```
 
-Alternatively, the configuration can be proved as environment variables in the form of `${SECTION}_${ITEM}` (e.g. `LISTEN_ADDRESS=127.0.0.1`)
+Alternatively, the configuration can be proved as environment variables in the
+form of `${SECTION}_${ITEM}` (e.g. `LISTEN_ADDRESS=127.0.0.1`)