Pulled feature branch up-stream.

src/styles/banner.scss

@@ -0,0 +1,147 @@
+@import "./media-queries.scss";
+
+
+// https://codepen.io/erikterwan/pen/EVzeRP
+@include mobile{
+  #menuToggle
+  {
+    display: block;
+    position: relative;
+    margin: 7px;
+    
+    z-index: 1;
+    
+    -webkit-user-select: none;
+    user-select: none;
+  }
+
+  #menuToggle a
+  {
+    text-decoration: none;
+    color: #333333;
+    
+    transition: color 0.3s ease;
+  }
+
+
+  #menuToggle input
+  {
+    display: block;
+    width: 40px;
+    height: 32px;
+    position: absolute;
+    top: -7px;
+    left: -5px;
+    
+    cursor: pointer;
+    
+    opacity: 0; /* hide this */
+    z-index: 2; /* and place it over the hamburger */
+    
+    -webkit-touch-callout: none;
+  }
+
+  /*
+  * Just a quick hamburger
+  */
+  #menuToggle span
+  {
+    display: block;
+    width: 33px;
+    height: 4px;
+    margin-bottom: 5px;
+    position: relative;
+    
+    background: #333333;
+    border-radius: 3px;
+    
+    z-index: 1;
+    
+    transform-origin: 4px 0px;
+    
+    transition: transform 0.5s cubic-bezier(0.77,0.2,0.05,1.0),
+                background 0.5s cubic-bezier(0.77,0.2,0.05,1.0),
+                opacity 0.55s ease;
+  }
+
+  #menuToggle span:first-child
+  {
+    transform-origin: 0% 0%;
+  }
+
+  #menuToggle span:nth-last-child(2)
+  {
+    transform-origin: 0% 100%;
+  }
+
+  /* 
+  * Transform all the slices of hamburger
+  * into a crossmark.
+  */
+  #menuToggle input:checked ~ span
+  {
+    opacity: 1;
+    transform: rotate(45deg) translate(-2px, -1px);
+    background: #232323;
+  }
+
+  /*
+  * But let's hide the middle one.
+  */
+  #menuToggle input:checked ~ span:nth-last-child(3)
+  {
+    opacity: 0;
+    transform: rotate(0deg) scale(0.2, 0.2);
+  }
+
+  /*
+  * Ohyeah and the last one should go the other direction
+  */
+  #menuToggle input:checked ~ span:nth-last-child(2)
+  {
+    transform: rotate(-45deg) translate(0, -1px);
+  }
+
+  /*
+  * Make this absolute positioned
+  * at the top left of the screen
+  */
+  #menu
+  {
+    position: absolute;
+    width: 100vw;
+    margin: -100px 0 0 -50px;
+    padding-bottom: 10px;
+    padding-top: 125px;
+    
+    background-color: $primary;
+    list-style-type: none;
+    -webkit-font-smoothing: antialiased;
+    /* to stop flickering of text in safari */
+    
+    transform-origin: 0% 0%;
+    transform: translate(-100%, 0);
+    
+    transition: transform 0.5s cubic-bezier(0.77,0.2,0.05,1.0);
+  }
+
+  #menu li
+  {
+    padding: 10px 0;
+    font-size: 22px;
+  }
+
+  /*
+  * And let's slide it in from the left
+  */
+  #menuToggle input:checked ~ ul
+  {
+    transform: none;
+  }
+}
+
+@include desktop{
+  #menuToggle{
+    display: none;
+  }
+}

src/styles/global.scss

@@ -144,13 +144,17 @@ textarea {
       0 16px 32px rgba(0, 0, 0, 0.07), 0 32px 64px rgba(0, 0, 0, 0.07);
   }
 
-  &:hover {
+  &:hover:not(:disabled) {
     transform: scale(1.02) translateZ(0);
 
     &::after {
       opacity: 1;
     }
   }
+  &:disabled{
+    opacity: 0.25;
+    cursor: not-allowed;
+  }
 }