diff --git a/.gitignore b/.gitignore
old mode 100644
new mode 100755
index 234665c..752c60b
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+._*
 .DS_Store
 _site/
 .sass-cache/
diff --git a/CNAME b/CNAME
old mode 100644
new mode 100755
diff --git a/LICENSE b/LICENSE
old mode 100644
new mode 100755
diff --git a/README.md b/README.md
old mode 100644
new mode 100755
diff --git a/assets/css/cookieconsent.min.css b/assets/css/cookieconsent.min.css
old mode 100644
new mode 100755
diff --git a/assets/css/fonts/orbitron-medium-webfont.woff b/assets/css/fonts/orbitron-medium-webfont.woff
old mode 100644
new mode 100755
diff --git a/assets/css/styles.css b/assets/css/styles.css
index 927b2a8..570f3b0 100755
--- a/assets/css/styles.css
+++ b/assets/css/styles.css
@@ -46,12 +46,16 @@ a.btn-start {
     border-width: 3px !important;
     border-color: #18a952 !important;
     background-color: #1cc761 !important;
+    border-top-left-radius: 0 !important;
+    border-bottom-left-radius: 0 !important;
 }
 /* stop code button */
 a.btn-stop {
     border-width: 3px !important;
     border-color: #c0312f !important;
     background-color: #d63634 !important;
+    border-top-right-radius: 0 !important;
+    border-bottom-right-radius: 0 !important;
 }
 .btn:hover, .btn.hover {
     border-width: 3px;
diff --git a/assets/img/battery_disconnected.png b/assets/img/battery_disconnected.png
old mode 100644
new mode 100755
diff --git a/assets/img/battery_empty.png b/assets/img/battery_empty.png
old mode 100644
new mode 100755
diff --git a/assets/img/battery_full.png b/assets/img/battery_full.png
old mode 100644
new mode 100755
diff --git a/assets/img/battery_half.png b/assets/img/battery_half.png
old mode 100644
new mode 100755
diff --git a/assets/img/favicon-32x32.png b/assets/img/favicon-32x32.png
old mode 100644
new mode 100755
diff --git a/assets/img/logo.png b/assets/img/logo.png
old mode 100644
new mode 100755
diff --git a/assets/img/robot_id.jpg b/assets/img/robot_id.jpg
old mode 100644
new mode 100755
diff --git a/assets/js/ace.js b/assets/js/ace.js
old mode 100644
new mode 100755
diff --git a/assets/js/ace/snippets/python.js b/assets/js/ace/snippets/python.js
old mode 100644
new mode 100755
diff --git a/assets/js/ace/snippets/text.js b/assets/js/ace/snippets/text.js
old mode 100644
new mode 100755
diff --git a/assets/js/blockly.js b/assets/js/blockly.js
old mode 100644
new mode 100755
diff --git a/assets/js/cookie.js b/assets/js/cookie.js
old mode 100644
new mode 100755
diff --git a/assets/js/main.js b/assets/js/main.js
old mode 100644
new mode 100755
diff --git a/assets/js/min/cookieconsent.min.js b/assets/js/min/cookieconsent.min.js
old mode 100644
new mode 100755
diff --git a/assets/js/min/jquery.min.js b/assets/js/min/jquery.min.js
old mode 100644
new mode 100755
diff --git a/assets/js/min/popper.min.js b/assets/js/min/popper.min.js
old mode 100644
new mode 100755
diff --git a/assets/js/utils.js b/assets/js/utils.js
old mode 100644
new mode 100755