refactor(app): styles cleanup; minor code improvements

src/styles/_global.scss

@@ -89,7 +89,8 @@ select {
   font-size: 1em;
 }
 
-input, select {
+input,
+select {
   background: none;
   color: white;
   font-size: 1em;
@@ -358,3 +359,22 @@ a.a-button {
   background-color: #aaa;
   margin: 0.5em 0;
 }
+
+.g-checkbox {
+  position: relative;
+  display: inline-block;
+
+  user-select: none;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+
+  display: flex;
+  justify-content: center;
+  align-items: center;
+
+  input {
+    position: absolute;
+    width: 1px;
+    height: 1px;
+  }
+}

src/styles/_icons.scss

@@ -39,9 +39,3 @@
     color: #aefff8;
   }
 }
-
-.icon-heart {
-  -webkit-mask: url(images/icon-heart.svg) no-repeat center;
-  mask: url(images/icon-heart.svg) no-repeat center;
-  mask-size: 1em;
-}

src/styles/_search-box.scss

@@ -61,8 +61,4 @@
   top: 50%;
   transform: translateY(-50%);
   padding-right: 0.5em;
-}
-
-select.search-input {
-
-}
+}