Fix #1

Also make website more mobile-friendly for smaller devices. And ignore
temporary scssc files from cache SCSS compiling.

web/style/style.scss

@@ -180,8 +180,8 @@ $gradient-accent3-light-right: linear-gradient(to right, $light,  $accent3);
     }
 
     .dropdown {
-        background: $accent3;
-        color: $dark;
+        background: $dark;
+        color: $light;
     }
 
     #content {
@@ -373,11 +373,34 @@ header {
 }
 
 #theme-dropdown {
-    width: 250px;
+    width: 150px;
     flex-direction: row;
     transform: translateX(-75%);
 }
 
+#lightBtn, #darkBtn, #blackBtn {
+    content: ' ';
+    border: 2px solid white;
+    border-radius: 50%;
+    width: 1rem;
+    height: 1rem;
+    display: inline-block;
+    vertical-align: middle;
+    margin-right: 10px;
+}
+
+#lightBtn {
+    background: $light;
+}
+
+#darkBtn {
+    background: $dark;
+}
+
+#blackBtn {
+    background: $black;
+}
+
 #drop-page, #table-of-contents {
     flex-direction: column;
 
@@ -385,7 +408,7 @@ header {
     top: -40px;
 
     height: 0;
-    min-width: 350px;
+    min-width: 300px;
     overflow-y: auto;
 
     font-size: 0.9em;