代码：

  <style>
    .masked{
            text-align: center;
            background-image: -webkit-linear-gradient(left, #147B96, #E6D205 25%, #147B96 50%, #E6D205 75%, #147B96);
            -webkit-text-fill-color: transparent;
            -webkit-background-clip: text;
            -webkit-background-size: 200% 100%;
            -webkit-animation: masked-animation 4s infinite linear
          }
        @-webkit-keyframes masked-animation {
             0%{ background-position: 0 0;}
             100% { background-position: -100% 0;
        }
    </style>

<span class="masked">文字彩虹跑马灯效果特效代码</span>