创造动态发光文字效果：纯CSS实现指南

:nth-of-type(4) { ... } @keyframes aurora-1 { ... } @keyframes aurora-2 { ... } @keyframes aurora background-color: var(--clr-2); left: 0; bottom: 0; animation: aurora-border 6s ease-in-out infinite, aurora 85% { top: 100%; left: 25%; } 100% { top: -50%; left: 0%; } } @keyframes aurora