diff --git a/README.md b/README.md
index 1d1ca62..3eb9692 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,14 @@ With GUI and cookies.
 
 Source code spreads under the GNU General Public License v.3. You can find it in LICENSE file.
 
+## Requirements
+
+JRE 8 or higher.
+
+## Usage
+
+`>_ java -jar /path/to/NS-USBloader.jar`
+
 ## Used libraries
 * OpenJFX https://wiki.openjdk.java.net/display/OpenJFX/Main
 * usb4java: https://mvnrepository.com/artifact/org.usb4java/usb4java
diff --git a/src/main/resources/res/app.css b/src/main/resources/res/app.css
index 867ad9c..39330c5 100644
--- a/src/main/resources/res/app.css
+++ b/src/main/resources/res/app.css
@@ -23,18 +23,8 @@
 }
 .button:focused, .buttonStop:focused, .buttonUp:focused{
     -fx-background-color: #6a6a6a;
-    -fx-border-color: #6a6a6a;
-    -fx-border-radius: 3;
-    -fx-border-width: 2;
-    -fx-text-fill: #f7fafa;
-}
-.button:hover:focused, .buttonStop:hover:focused, .buttonUp:hover:focused{
-    -fx-background-color: #6a6a6a;
-    -fx-border-color: #a4ffff;
-    -fx-border-radius: 3;
-    -fx-border-width: 2;
-    -fx-text-fill: #f7fafa;
 }
+
 .button:pressed, .dialog-pane .button:pressed{
     -fx-background-color: #4f4f4f;
     -fx-border-color: #289de8;
@@ -48,7 +38,6 @@
     -fx-border-radius: 3;
     -fx-border-width: 2;
     -fx-text-fill: #f7fafa;
-    
 }
 .buttonStop:pressed{
     -fx-background-color: #4f4f4f;
@@ -56,7 +45,6 @@
     -fx-border-radius: 3;
     -fx-border-width: 2;
     -fx-text-fill: #f7fafa;
-    
 }
 
 .text-area{