diff --git a/tokyo.css b/tokyo.css
index 3c81824..b91aeed 100644
--- a/tokyo.css
+++ b/tokyo.css
@@ -16,7 +16,8 @@ article {
   width: 115%;
 }
 
-.glitch:before, .glitch:after {
+.glitch::before,
+.glitch::after {
   display: block;
   content: '/n(j)uː/ tokyo';
   position: absolute;
@@ -27,22 +28,22 @@ article {
   opacity: .8;
 }
 
-.glitch:after {
+.glitch::after {
   color: #f0f;
   z-index: -2;
 }
 
-.glitch:before {
+.glitch::before {
   color: #0ff;
   z-index: -1;
 }
 
-.glitch:not(:hover):before {
+.glitch:not(:hover)::before {
   -webkit-animation: glitch 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) both infinite;
           animation: glitch 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) both infinite;
 }
 
-.glitch:not(:hover):after {
+.glitch:not(:hover)::after {
   -webkit-animation: glitch 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94) reverse both infinite;
           animation: glitch 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94) reverse both infinite;
 }