(doc) improved readme
diff --git a/README.md b/README.md
index e836be5..e0be048 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@
  limitations under the License.
 -->
 
-<img src="https://maven.apache.org/images/maven-logo-black-on-white.png" width="100%" height="30%" alt="Maven"/>
+<img src="https://maven.apache.org/images/maven-logo-black-on-white.png" alt="Maven"/>
 
 Contributing to [Apache Maven Surefire](https://maven.apache.org/surefire/)
 ======================
@@ -49,12 +49,22 @@
 Build the Surefire project using **Maven 3.1.0+** and **JDK 1.8+**.  
 
 * In order to run tests for a release check during the Vote, the following memory requirements are needed:   
-  **(on Linux/Unix)** *export MAVEN_OPTS="-server -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=384m -XX:+UseG1GC -XX:+UseStringDeduplication -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:SoftRefLRUPolicyMSPerMB=50 -Djava.awt.headless=true -Dhttps.protocols=TLSv1"*  
-  **(on Windows)** *set MAVEN_OPTS="-server -Xmx256m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=384m -XX:+UseG1GC -XX:+UseStringDeduplication -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:SoftRefLRUPolicyMSPerMB=50 -Djava.awt.headless=true -Dhttps.protocols=TLSv1"*    
+  On Linux/Unix:
+  ```
+  export MAVEN_OPTS="-server -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=384m -XX:+UseG1GC -XX:+UseStringDeduplication -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:SoftRefLRUPolicyMSPerMB=50 -Djava.awt.headless=true -Dhttps.protocols=TLSv1"
+  ```
+  On Windows:
+  ```
+  set MAVEN_OPTS="-server -Xmx256m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=384m -XX:+UseG1GC -XX:+UseStringDeduplication -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:SoftRefLRUPolicyMSPerMB=50 -Djava.awt.headless=true -Dhttps.protocols=TLSv1"
+  ```
 * In order to run the tests with **JDK 1.7** (on Linux/Unix modify the system property **jdk.home**):  
-  *mvn install site site:stage -P reporting,run-its "-Djdk.home=e:\Program Files\Java\jdk1.7.0_80\"*
+  ```
+  mvn install site site:stage -P reporting,run-its "-Djdk.home=e:\Program Files\Java\jdk1.7.0_80\"
+  ```
 * In order to run the build and the tests with **JDK 1.8+**, e.g. JDK 11:    
-  *mvn install site site:stage -P reporting,run-its "-Djdk.home=e:\Program Files\Java\jdk11\"*
+  ```
+  mvn install site site:stage -P reporting,run-its "-Djdk.home=e:\Program Files\Java\jdk11\"
+  ```
   
 
 ### Deploying web site