.login-container{--size:30px;--el-bg:#000}.dark .login-container{--el-bg:#fff}.bg-el{background:var(--el-bg);width:100%;height:100%;-webkit-mask:radial-gradient(circle at 50% 50%, white 2px, transparent 2.5px) 50% 50% / var(--size) var(--size), url(https://assets.codepen.io/605876/noise-mask.png) 256px 50% / 256px 256px;mask:radial-gradient(circle at 50% 50%, white 2px, transparent 2.5px) 50% 50% / var(--size) var(--size), url(https://assets.codepen.io/605876/noise-mask.png) 256px 50% / 256px 256px;opacity:1;pointer-events:none;animation:20s linear infinite flicker;position:absolute;inset:0;-webkit-mask-composite:source-in;mask-composite:intersect}@keyframes flicker{to{-webkit-mask-position:50%,0;mask-position:50%,0}}