added 5 new mods, power up display, game balance

style.css

@@ -1,7 +1,7 @@
 body {
   font-family: "Helvetica", "Arial", sans-serif;
   margin: 0;
-  overflow: hidden;
+  /* overflow: hidden; */
   background-color: #fff;
   user-select: none;
   /*cursor: crosshair;*/
@@ -35,10 +35,78 @@ table {
   /* background-color: #ddd; */
 }
 
+th {
+  text-align: left;
+}
+
 summary {
   font-size: 1.2em;
 }
 
+#build-button {
+  position: absolute;
+  bottom: 0px;
+  right: 1px;
+  z-index: 12;
+  font-size: 1.3em;
+}
+
+#build-grid {
+  padding: 10px;
+  margin: 0px;
+  border: 0px;
+  /* border-radius: 8px; */
+  background-color: #b6bfca;
+
+  display: none;
+  /* display: grid; */
+  grid-template-columns: repeat(auto-fit, minmax(292px, 1fr));
+  grid-auto-rows: minmax(auto, auto);
+  grid-gap: 15px;
+
+  position: relative;
+  bottom: 0px;
+  /* left: 0px; */
+  z-index: 12;
+  font-size: 1.3em;
+}
+
+.build-grid-module {
+  /* box-shadow: 0px 1px 4px #234; */
+  padding: 7px;
+  /* margin: 4px; */
+  line-height: 150%;
+  border-radius: 6px;
+  background: #eee;
+  font-size: 0.65em;
+  /* display: flex; */
+}
+
+.build-grid-module:hover {
+  background-color: #fff;
+}
+
+.gun-module {
+  background: #d5dde5;
+}
+
+.field-module {
+  background: #bde;
+}
+
+.mod-module {
+  background: #fdf;
+}
+
+
+/* #build {
+  position: absolute;
+  bottom: 0px;
+  right: 1px;
+  z-index: 12;
+  font-size: 1.3em;
+} */
+
 #controls {
   position: absolute;
   bottom: 0px;
@@ -49,14 +117,6 @@ summary {
   /* border-radius: 5px; */
 }
 
-#settings {
-  position: absolute;
-  bottom: 0px;
-  right: 1px;
-  z-index: 12;
-  font-size: 1.3em;
-}
-
 #details-div {
   padding: 10px;
   border-radius: 8px;
@@ -214,36 +274,28 @@ em {
 
 .color-f {
   color: #0cf;
-}
-
-.color-b {
-  color: #024;
+  letter-spacing: 1px;
 }
 
 .color-d {
-  color: #f05;
-}
-
-.color-l {
-  color: #f0f;
+  color: #f03;
+  letter-spacing: 1px;
 }
 
 .color-h {
-  color: #0d9;
+  color: #0c8;
+  letter-spacing: 1px;
 }
 
 .color-e {
-  color: #a10;
-}
-
-.color-m {
-  color: #536;
+  color: #e50;
+  letter-spacing: 1px;
 }
 
 .color-s {
   color: #066;
   font-weight: 900;
-  letter-spacing: 2px;
+  letter-spacing: 1px;
 }
 
 .faded {
@@ -256,6 +308,15 @@ em {
   height: 20px;
   border-radius: 50%;
   display: inline-block;
+  margin-bottom: -2px;
+}
+
+.circle-grid {
+  width: 20px;
+  height: 20px;
+  border-radius: 50%;
+  display: inline-block;
+  margin-bottom: -4px;
 }
 
 .field {
@@ -268,12 +329,10 @@ em {
 
 .gun {
   background: #149;
-  margin-bottom: -2px;
 }
 
 .heal {
   background: #0d9;
-  margin-bottom: -2px;
 }
 
 .box {