.border-fire {
    border: 3px solid;
    border-image: linear-gradient(45deg, red, darkred) 1;
    clip-path: inset(0px round 3px);
    animation: fireanim 6s infinite linear;
}

@keyframes fireanim {
    0% {
        filter: brightness(1);
    }
    50% {
        filter: brightness(1.5) hue-rotate(15deg);
		
    }
	100% {
        filter: brightness(1);
    }
	
}