diff --git a/css/main.css b/css/main.css
index 74f1ea0..610c6bb 100644
--- a/css/main.css
+++ b/css/main.css
@@ -1,34 +1,123 @@
-.name {
-    font-size: 20pt;
-    justify-self: start;
-}
-
-.unit {
-    font-size: 25pt;
-    justify-self: end;
-}
-
-.value {
-    font-size: 50pt;
-    justify-self: center;
-    grid-column: 1 / -1;
-}
-
-
-.cards {
-    display: grid;
-    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
-    grid-auto-rows: auto;
-    grid-gap: 1rem;
-}
-
-.card {
-    display: grid;
-    grid-template-columns: 1fr 1fr;
-    grid-auto-rows: auto;
-    grid-gap: 1rem;
-
-    border: 2px solid #e7e7e7;
-    border-radius: 4px;
-    padding: .5rem;
+* {
+    box-sizing: border-box;
+    margin: 0;
+    padding: 0;
+}
+
+body {
+    font-family: Arial, sans-serif;
+    line-height: 1.6;
+    color: #333;
+    background-color: #e6eeff;
+}
+
+h1, h2 {
+    font-weight: bold;
+    color: #333;
+}
+
+button {
+    padding: 10px 20px;
+    border: none;
+    border-radius: 5px;
+    cursor: pointer;
+    background-color: #4CAF50;
+    color: #fff;
+}
+
+button:hover {
+    background-color: #3e8e41;
+}
+
+footer {
+    position: fixed;
+    bottom: 0;
+    left: 0;
+    width: 100%;
+    height: 40px;
+    background-color: #b3cbff;
+    text-align: center;
+    padding: 10px;
+    color: #333;
+    font-size: 12px;
+}
+
+footer a {
+    color: #333;
+    text-decoration: none;
+    cursor: pointer;
+}
+
+footer a:hover {
+    text-decoration: underline;
+}
+
+/* Responsive Styles */
+
+@media (max-width: 768px) {
+    /* For mobile devices */
+    video {
+        width: 90%;
+        height: auto;
+    }
+
+    #bleConnectionButton {
+        width: 100%;
+        padding: 10px 20px;
+    }
+}
+
+@media (min-width: 992px) {
+    /* For tablets and desktop devices */
+    video {
+        width: 80%;
+        height: auto;
+    }
+
+    #bleConnectionButton {
+        width: 100%;
+        padding: 10px 20px;
+    }
+}
+
+.name {
+    font-size: 20pt;
+    justify-self: start;
+}
+
+.unit {
+    font-size: 25pt;
+    justify-self: end;
+}
+
+.value {
+    font-size: 50pt;
+    justify-self: center;
+    grid-column: 1 / -1;
+}
+
+.cards {
+    display: grid;
+    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
+    grid-auto-rows: auto;
+    grid-gap: 1rem;
+}
+
+.card {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    grid-auto-rows: auto;
+    grid-gap: 1rem;
+
+    border: 2px solid #e7e7e7;
+    border-radius: 6px;
+    padding: .5rem;
+}
+
+.training {
+    display: none;
+}
+
+.video-js.vjs-has-started .vjs-tech {
+    pointer-events: none;
 }
\ No newline at end of file