Optimize paint performance

_sass/_expo.scss

@@ -198,16 +198,15 @@ h1, h2, h3 {
 
   &::after {
     position: absolute;
-    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='96' height='96' fill-rule='evenodd' clip-rule='evenodd' image-rendering='optimizeQuality' shape-rendering='geometricPrecision' text-rendering='geometricPrecision' viewBox='0 0 640 640'%3E%3Cpath fill='%23fff' d='M640.012 320L385.151 577.448V449.191C223.988 415.801 96.675 452.604-.011 575.193c16.784-252.109 189.002-373.776 385.162-381.831V62.553l254.861 257.448z'/%3E%3C/svg%3E");
+    content: "";
     display: block;
     text-align: center;
-    top: 50%;
-    left: 0;
+    top: 0;
     right: 0;
-    color: #fff;
+    bottom: 0;
+    left: 0;
+    background: rgba(#ffffff, .35) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='96' height='96' fill-rule='evenodd' clip-rule='evenodd' image-rendering='optimizeQuality' shape-rendering='geometricPrecision' text-rendering='geometricPrecision' viewBox='0 0 640 640'%3E%3Cpath fill='%23fff' d='M640.012 320L385.151 577.448V449.191C223.988 415.801 96.675 452.604-.011 575.193c16.784-252.109 189.002-373.776 385.162-381.831V62.553l254.861 257.448z'/%3E%3C/svg%3E") center no-repeat;
     opacity: 0;
-    -webkit-transform: translateY(-50%);
-    transform: translateY(-50%);
     -webkit-transition: opacity .2s linear .05s;
     transition: opacity .2s linear .05s;
   }
@@ -225,9 +224,6 @@ h1, h2, h3 {
     -webkit-transition: opacity .2s linear;
     transition: opacity .2s linear;
   }
-  &:hover img {
-    opacity: .65;
-  }
 }
 
 .entry-content {