@keyframes glowMove{0%{background-position:-200% 0}to{background-position:200% 0}}.line-horizontal{animation:glowMove 2s linear infinite;background:linear-gradient(90deg,#8b0000,red,brown);background-size:200% 100%;height:2px;-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);width:100%}.line-horizontal,.line-vertical{border-radius:1px;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-size:100% 100%;mask-size:100% 100%}.line-vertical{animation:glowMoveVertical 2s linear infinite;background:linear-gradient(180deg,#8b0000,red,brown);background-size:100% 200%;height:150vh;-webkit-mask-image:linear-gradient(180deg,transparent,#000 10%,#000 90%,transparent);mask-image:linear-gradient(180deg,transparent,#000 10%,#000 90%,transparent);width:1px}@keyframes glowMoveVertical{0%{background-position:0 -200%}to{background-position:0 200%}}