Improve scrollbar behavior

Avoids showing the scrollbar if not needed, and also gets rid of the
scrollbar track

gorge.css

@@ -73,6 +73,8 @@ button {
   right: 5%;
   top: 10%;
   height: 90%;
+  max-height: 80vh;
+  padding-bottom: 10px;
   overflow-x: hidden;
   overflow-y: scroll;
 }
@@ -83,6 +85,7 @@ button {
     left: 50%;
     width: 50%;
     height: 45%;
+    max-height: 40vh;
   }
 
 }
@@ -217,6 +220,10 @@ button {
     height: 35%;
     width: 50%;
   }
+
+  #upgrades-list {
+    max-height: 25vh !important;
+  }
 }
 
 .title {
@@ -228,7 +235,8 @@ button {
 #upgrades-list {
   display: flex;
   flex-wrap: wrap;
-  height: 100%;
+  max-height: 70vh;
+  padding-bottom: 75px;
   overflow-x: hidden;
   overflow-y: scroll;
 }
@@ -440,7 +448,7 @@ div::-webkit-scrollbar-thumb:active {
   background: #000000;
 }
 div::-webkit-scrollbar-track {
-  background: #666666;
+  background: #00000000;
   border: 0px none #ffffff;
   border-radius: 50px;
 }