body{
    background-color: black;
}

.container{
    width: 80%;
}

.glitch {/*基本*/
    color: white;
    font-size: 150px;
    position: relative;
    margin-top: 15px;
    width: 25%;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }

@keyframes noise {/*グリッチの動きを設定*/
    0% {/*上、右、下、左の順*/
      clip: rect(0px, 9999px, 6px, 0);
    }
    5% {
      clip: rect(1px, 9999px, 70px, 0);
    }
    10% {
      clip: rect(82px, 9999px, 120px, 0);
    }
    15% {
      clip: rect(32px, 9999px, 35px, 0);
    }
    20% {
      clip: rect(31px, 9999px, 49px, 0);
    }
    25% {
      clip: rect(18px, 9999px, 46px, 0);
    }
    30% {
      clip: rect(94px, 9999px, 64px, 0);
    }
    35% {
      clip: rect(69px, 9999px, 31px, 0);
    }
    40% {
      clip: rect(6px, 9999px, 72px, 0);
    }
    45% {
      clip: rect(25px, 9999px, 35px, 0);
    }
    50% {
      clip: rect(15px, 9999px, 26px, 0);
    }
    55% {
      clip: rect(10px, 9999px, 200px, 0);
    }
    60% {
      clip: rect(54px, 9999px, 30px, 0);
    }
    65% {
      clip: rect(86px, 9999px, 90px, 0);
    }
    70% {
      clip: rect(38px, 9999px, 65px, 0);
    }
    75% {
      clip: rect(41px, 9999px, 90px, 0);
    }
    80% {
      clip: rect(31px, 9999px, 37px, 0);
    }
    85% {
      clip: rect(8px, 9999px, 12px, 0);
    }
    90% {
      clip: rect(50px, 9999px, 150px, 0);
    }
    95% {
      clip: rect(50px, 9999px, 50px, 0);
    }
    100% {
      clip: rect(10px, 9999px, 100px, 0);
    }
  }
.glitch::after {/*疑似要素を加える*/
    text-align: center;
    content: attr(data-text);
    position: absolute;
    left: 10px;
    text-shadow: 5px 0 red;
    top: 0;
    color:gray;
    background: black;
    overflow: hidden;
    clip: rect(0, 900px, 0, 0);
    animation: noise 2s infinite alternate-reverse;
  }
  
  @keyframes noise2{/*ノイズ用アニメーション*/
    0% {
      clip: rect(30px, 9999px, 13px, 0);
    }
    5% {
      clip: rect(74px, 9999px, 51px, 0);
    }
    10% {
      clip: rect(33px, 9999px, 65px, 0);
    }
    15% {
      clip: rect(64px, 9999px, 999px, 0);
    }
    20% {
      clip: rect(75px, 9999px, 6px, 0);
    }
    25% {
      clip: rect(20px, 9999px, 49px, 0);
    }
    30% {
      clip: rect(63px, 9999px, 5px, 0);
    }
    35% {
      clip: rect(42px, 9999px, 15px, 0);
    }
    40% {
      clip: rect(92px, 9999px, 57px, 0);
    }
    45% {
      clip: rect(4px, 9999px, 33px, 0);
    }
    50% {
      clip: rect(4px, 9999px, 34px, 0);
    }
    55% {
      clip: rect(49px, 9999px, 25px, 0);
    }
    60% {
      clip: rect(24px, 9999px, 999px, 0);
    }
    65% {
      clip: rect(31px, 9999px, 10px, 0);
    }
    70% {
      clip: rect(5px, 9999px, 83px, 0);
    }
    75% {
      clip: rect(1px, 9999px, 999px, 0);
    }
    80% {
      clip: rect(3px, 9999px, 15px, 0);
    }
    85% {
      clip: rect(68px, 9999px, 34px, 0);
    }
    90% {
      clip: rect(10px, 9999px, 88px, 0);
    }
    95% {
      clip: rect(0px, 9999px, 59px, 0);
    }
    100% {
      clip: rect(10px, 9999px, 999px, 0);
    }
  }
  .glitch::before {
    text-align: center;
    content: attr(data-text);
    position: absolute;
    left: -2px;
    text-shadow: 5px 0 blue;
    top: 0;
    color: white;
    background: black;
    overflow: hidden;
    clip: rect(0, 900px, 0, 0);
    animation: noise2 3s infinite linear alternate-reverse;
  }