chg: usr: improve the gfx on homepage - implement login/register and activation for authentication - and add the first version of profile page #4

assets/css/mineseeker/_responsive.scss

@@ -0,0 +1,41 @@
+@media screen and (max-width: 900px) {
+    #mine-wrapper .game-wrapper .users {
+        visibility: hidden;
+        display: none;
+    }
+
+    #mine-wrapper {
+        display: block;
+        width: 100%;
+    }
+
+    #mine-wrapper .game-wrapper {
+        width: 100%;
+        flex-direction: column-reverse;
+    }
+
+    #mine-wrapper .grid-container {
+        width: 100%;
+        padding: 0;
+    }
+
+    #mine-wrapper .grid {
+        width: 100%;
+    }
+
+    #mine-wrapper .grid .field-wrapper {
+        width: 6.25%;
+        aspect-ratio: 1;
+    }
+
+    #mine-wrapper .grid .field-wrapper > img.field-target {
+        width: 105%;
+        top: -2.5%;
+        left: -2.5%;
+    }
+
+    #mine-wrapper .grid .field-wrapper .field {
+        width: 100%;
+        height: auto;
+    }
+}