add movement check, score addition

style/main.css

@@ -22,6 +22,33 @@ h1.title {
   display: block;
   float: left; }
 
+@-webkit-keyframes move-up {
+  0% {
+    top: 25px;
+    opacity: 1; }
+
+  100% {
+    top: -50px;
+    opacity: 0; } }
+
+@-moz-keyframes move-up {
+  0% {
+    top: 25px;
+    opacity: 1; }
+
+  100% {
+    top: -50px;
+    opacity: 0; } }
+
+@keyframes move-up {
+  0% {
+    top: 25px;
+    opacity: 1; }
+
+  100% {
+    top: -50px;
+    opacity: 0; } }
+
 .score-container {
   position: relative;
   float: right;
@@ -45,6 +72,19 @@ h1.title {
     line-height: 13px;
     text-align: center;
     color: #eee4da; }
+  .score-container .score-addition {
+    position: absolute;
+    right: 30px;
+    color: red;
+    font-size: 25px;
+    line-height: 25px;
+    font-weight: bold;
+    color: rgba(119, 110, 101, 0.9);
+    z-index: 100;
+    -webkit-animation: move-up 600ms ease-in;
+    -moz-animation: move-up 600ms ease-in;
+    -webkit-animation-fill-mode: both;
+    -moz-animation-fill-mode: both; }
 
 p {
   margin-top: 0;

style/main.scss

@@ -46,6 +46,18 @@ h1.title {
   float: left;
 }
 
+@include keyframes(move-up) {
+  0% {
+    top: 25px;
+    opacity: 1;
+  }
+
+  100% {
+    top: -50px;
+    opacity: 0;
+  }
+}
+
 .score-container {
   $height: 25px;
 
@@ -73,6 +85,19 @@ h1.title {
     text-align: center;
     color: $tile-color;
   }
+
+  .score-addition {
+    position: absolute;
+    right: 30px;
+    color: red;
+    font-size: $height;
+    line-height: $height;
+    font-weight: bold;
+    color: rgba($text-color, .9);
+    z-index: 100;
+    @include animation(move-up 600ms ease-in);
+    @include animation-fill-mode(both);
+  }
 }
 
 p {