.crt::before {
    content: " ";
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(rgba(48, 32, 32, 0) 50%, rgba(0, 0, 0, 0.06) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
    z-index: 9999;
    background-size: 100% 2px, 3px 100%;
    pointer-events: none;
}

.crt::after {
    content: " ";
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: 
    radial-gradient(ellipse at center,
        rgba(0,0,0,0) 50%,
        rgba(0,0,0,0) 95%,
        rgba(0,0,0,0.5) 100%
    );
    opacity: 10%;
    z-index: 9999;
    pointer-events: none;
}