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remind you to blink
// ==UserScript==
// @name blink
// @namespace http://tampermonkey.net/
// @version 0.2
// @description remind you to blink
// @author jackC
// @match *://*/*
// @icon data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant GM_addStyle
// @license MIT
// ==/UserScript==
(function() {
'use strict';
if(self==top){
blink();
addStyle();
}
})();
function blink(){
let body=document.body;
let blink=document.createElement('div');
blink.classList.add('blink')
body.appendChild(blink);
}
function addStyle(){
let css=`
.blink{
pointer-events:none;
position:fixed;
z-index:9999;
top:0;
left:0;
height:100%;
background-color:transparent;
width:100%;
animation:blink 2s linear 0s infinite alternate;
}
@keyframes blink{
0% ,74% {background-color:transparent;}
75% {background-image: radial-gradient(transparent 99%,black);}
76% {background-image: radial-gradient(transparent 95%,black);}
77% {background-image: radial-gradient(transparent 91%,black);}
78% {background-image: radial-gradient(transparent 87%,black);}
79% {background-image: radial-gradient(transparent 83%,black);}
80% {background-image: radial-gradient(transparent 79%,black);}
81% {background-image: radial-gradient(transparent 75%,black);}
82% {background-image: radial-gradient(transparent 71%,black);}
83% {background-image: radial-gradient(transparent 67%,black);}
84% {background-image: radial-gradient(transparent 63%,black);}
85% {background-image: radial-gradient(transparent 59%,black);}
86% {background-image: radial-gradient(transparent 55%,black);}
87% {background-image: radial-gradient(transparent 51%,black);}
88% {background-image: radial-gradient(transparent 47%,black);}
89% {background-image: radial-gradient(transparent 43%,black);}
90% {background-image: radial-gradient(transparent 39%,black);}
91% {background-image: radial-gradient(transparent 35%,black);}
92% {background-image: radial-gradient(transparent 31%,black);}
93% {background-image: radial-gradient(transparent 27%,black);}
94% {background-image: radial-gradient(transparent 23%,black);}
95% {background-image: radial-gradient(transparent 19%,black);}
96% {background-image: radial-gradient(transparent 15%,black);}
97% {background-image: radial-gradient(transparent 11%,black);}
98% {background-image: radial-gradient(transparent 7%,black);}
99% {background-image: radial-gradient(transparent 3%,black);}
100% {background-color: black;}
}
`
GM_addStyle(css)
}