<div class="font24" data-text="404">404</div>

.font24 {
  width: 156px;
  height: 98px;
  position: relative;
  font-size: 70px;
  font-weight: 900;
  color: transparent;
  letter-spacing: 10px;
  z-index: 10;
  animation: text-skew 4s linear infinite;
}
.font24:before,.font24:after {
  display: block;
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
}
.font24:before {
  animation: text-light 1s alternate-reverse infinite;
  color: #ff0000;
  z-index: -5;
  text-shadow: 2px 2px 0 #00ff00;
  mix-blend-mode: darken;  /* 设置混合模式 */
}
.font24:after {
  animation: text-light2 0.5s alternate-reverse infinite;
  color: #00ff00;
  z-index: -10;
  text-shadow: 2px 2px 0 #ff0000;
}
@keyframes text-light{
  10% {
    transform: translate(-2px,4px);
  }
  50% {
    transform: translate(2px, 2px);
  }
  100% {
    transform: translate(-4px,4px);
  }
}
@keyframes text-light2{
  0% {
    transform: translate(0,0);
  }
  20% {
    transform: translate(-2px,2px);
  }
  40% {
    transform: translate(-2px,2px);
  }
  60% {
    transform: translate(2px, -2px);
  }
  80% {
    transform: translate(2px, 2px);
  }
  100% {
    transform: translate(0,0);
  }
}
@keyframes text-skew{
  29%{
    color: transparent;
    transform: skew(0deg,0deg);
  }
  30%{
    color: #000000;
    transform: skew(10deg,40deg);
  }
  31%{
    color: transparent;
    transform: skew(0deg,0deg);
  }
  69%{
    color: transparent;
    transform: skew(0deg,0deg);
  }
  70%{
    color: #000000;
    transform: skew(180deg,10deg);
  }
  71%{
    color: transparent;
    transform: skew(0deg,0deg);
  }
}