/* Our mixin positions a copy of our text directly on our existing text, while also setting content to the appropriate text set in the data-text attribute. */ .glitch { position: relative; color: white; font-size: 12px; letter-spacing: .5em; /* Animation provies a slight random skew. Check bottom of doc for more information on how to random skew. */ animation: glitch-skew 1s infinite linear alternate-reverse; } .glitch::before { content: attr(data-text); position: absolute; top: 0; left: 0; width: 100%; height: 100%; left: 2px; text-shadow: -2px 0 #ff00c1; /* Creates an initial clip for our glitch. This works in a typical top,right,bottom,left fashion and creates a mask to only show a certain part of the glitch at a time. */ clip: rect(44px, 450px, 56px, 0); /* Runs our glitch-anim defined below to run in a 5s loop, infinitely, with an alternating animation to keep things fresh. */ animation: glitch-anim 5s infinite linear alternate-reverse; } .glitch::after { content: attr(data-text); position: absolute; top: 0; left: 0; width: 100%; height: 100%; left: -2px; text-shadow: -2px 0 #00fff9, 2px 2px #ff00c1; animation: glitch-anim2 1s infinite linear alternate-reverse; } /* Creates an animation with 20 steaps. For each step, it calculates a percentage for the specific step. It then generates a random clip box to be used for the random glitch effect. Also adds a very subtle skew to change the 'thickness' of the glitch.*/ @keyframes glitch-anim { 0% { clip: rect(61px, 9999px, 7px, 0); transform: skew(0.17deg); } 5% { clip: rect(9px, 9999px, 91px, 0); transform: skew(0.24deg); } 10% { clip: rect(24px, 9999px, 95px, 0); transform: skew(0.69deg); } 15% { clip: rect(78px, 9999px, 69px, 0); transform: skew(0.32deg); } 20% { clip: rect(99px, 9999px, 59px, 0); transform: skew(0.55deg); } 25% { clip: rect(20px, 9999px, 92px, 0); transform: skew(0.62deg); } 30% { clip: rect(90px, 9999px, 77px, 0); transform: skew(0.2deg); } 35% { clip: rect(54px, 9999px, 41px, 0); transform: skew(0.93deg); } 40% { clip: rect(29px, 9999px, 66px, 0); transform: skew(0.76deg); } 45% { clip: rect(53px, 9999px, 42px, 0); transform: skew(0.3deg); } 50% { clip: rect(5px, 9999px, 22px, 0); transform: skew(0.48deg); } 55% { clip: rect(3px, 9999px, 31px, 0); transform: skew(0.71deg); } 60% { clip: rect(61px, 9999px, 66px, 0); transform: skew(0.64deg); } 65% { clip: rect(85px, 9999px, 96px, 0); transform: skew(0.7deg); } 70% { clip: rect(9px, 9999px, 49px, 0); transform: skew(0.14deg); } 75% { clip: rect(73px, 9999px, 90px, 0); transform: skew(0.24deg); } 80% { clip: rect(93px, 9999px, 23px, 0); transform: skew(0.31deg); } 85% { clip: rect(92px, 9999px, 65px, 0); transform: skew(1deg); } 90% { clip: rect(65px, 9999px, 61px, 0); transform: skew(0.13deg); } 95% { clip: rect(99px, 9999px, 17px, 0); transform: skew(0.02deg); } 100% { clip: rect(99px, 9999px, 38px, 0); transform: skew(0.23deg); } } @keyframes glitch-anim2 { 0% { clip: rect(50px, 9999px, 51px, 0); transform: skew(0.2deg); } 5% { clip: rect(53px, 9999px, 26px, 0); transform: skew(0.91deg); } 10% { clip: rect(43px, 9999px, 19px, 0); transform: skew(0.7deg); } 15% { clip: rect(33px, 9999px, 74px, 0); transform: skew(0.53deg); } 20% { clip: rect(47px, 9999px, 61px, 0); transform: skew(0.08deg); } 25% { clip: rect(20px, 9999px, 31px, 0); transform: skew(0.09deg); } 30% { clip: rect(55px, 9999px, 69px, 0); transform: skew(0.68deg); } 35% { clip: rect(5px, 9999px, 43px, 0); transform: skew(0.44deg); } 40% { clip: rect(13px, 9999px, 80px, 0); transform: skew(0.73deg); } 45% { clip: rect(60px, 9999px, 58px, 0); transform: skew(0.86deg); } 50% { clip: rect(52px, 9999px, 24px, 0); transform: skew(0.12deg); } 55% { clip: rect(37px, 9999px, 41px, 0); transform: skew(0.94deg); } 60% { clip: rect(31px, 9999px, 8px, 0); transform: skew(0.75deg); } 65% { clip: rect(86px, 9999px, 51px, 0); transform: skew(0.17deg); } 70% { clip: rect(41px, 9999px, 23px, 0); transform: skew(0.47deg); } 75% { clip: rect(70px, 9999px, 14px, 0); transform: skew(0.61deg); } 80% { clip: rect(32px, 9999px, 24px, 0); transform: skew(0.43deg); } 85% { clip: rect(100px, 9999px, 69px, 0); transform: skew(0.49deg); } 90% { clip: rect(45px, 9999px, 56px, 0); transform: skew(0.47deg); } 95% { clip: rect(85px, 9999px, 95px, 0); transform: skew(0.55deg); } 100% { clip: rect(85px, 9999px, 14px, 0); transform: skew(0.41deg); } } @keyframes glitch-skew { 0% { transform: skew(4deg); } 10% { transform: skew(-3deg); } 20% { transform: skew(-4deg); } 30% { transform: skew(-4deg); } 40% { transform: skew(-3deg); } 50% { transform: skew(-2deg); } 60% { transform: skew(-4deg); } 70% { transform: skew(0deg); } 80% { transform: skew(5deg); } 90% { transform: skew(1deg); } 100% { transform: skew(4deg); } }