UI/Player/ScreenOverlay.razor
@using Sandbox.UI
@inherits Panel

<style>
    ScreenOverlay {
        position: absolute;
        width: 100%;
        height: 100%;
        align-items: center;
        justify-content: center;
        transition: all 0.5s sin-ease-in-out;
        flex-direction: row;
        z-index: 10;

        &.hidden {
            opacity: 0;
            pointer-events: none;
        }
        .inner {
            width: 95%;
            height: 95%;
            border: 5px solid rgba(255, 255, 255, 1);
            background-image: url("ui/overlay/grid.png");
            background-size: 12.5% 25%;
            opacity: 0.02;
            image-rendering: nearest-neighbor;
        }

        .icon {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translateX(-50%) translateY(-50%);
            transition: opacity 0.1s ease;
            opacity: 0.025;

            &.crosshair {
                aspect-ratio: 1;
                width: 5%;
                opacity: 0.075;
            }
        }
    }
</style>

<root>
    <img class="icon" src="ui/crosshair/crosshair.png" />
    <img class="icon crosshair" src="ui/crosshair/crosshair2.png" />
    <label class="inner"></label>
</root>

@code
{
    public override void Tick()
    {
        SetClass( "hidden", !(LocalPlayer.Pawn?.IsAlive ?? false) );
    }
}