✦
Holographic
Hover to reveal the rainbow holographic shimmer effect
<div class="krl-holo-card">
<div class="krl-holo-card__icon">✦</div>
<div class="krl-holo-card__title">Holographic</div>
<div class="krl-holo-card__text">Hover me</div>
</div>
.krl-holo-card{
width:220px;padding:24px 20px;border-radius:18px;
background:linear-gradient(145deg,#14191f,#0d1117);
border:1px solid #1f2630;color:#fff;
font-family:'Poppins',sans-serif;text-align:center;
position:relative;overflow:hidden;
transition:transform .4s,box-shadow .4s;
}
.krl-holo-card::before{
content:'';position:absolute;top:-50%;left:-50%;
width:200%;height:200%;
background:conic-gradient(from 0deg,
transparent 0%,rgba(0,255,163,.15) 10%,transparent 20%,
rgba(245,166,35,.15) 30%,transparent 40%,
rgba(255,107,157,.15) 50%,transparent 60%,
rgba(196,77,255,.15) 70%,transparent 80%,
rgba(0,255,163,.15) 90%,transparent 100%);
animation:krl-holo-rotate 4s linear infinite;
opacity:0;transition:opacity .4s;
}
.krl-holo-card:hover::before{opacity:1;}
.krl-holo-card::after{
content:'';position:absolute;inset:1px;
border-radius:17px;
background:linear-gradient(145deg,#14191f,#0d1117);
z-index:1;
}
.krl-holo-card:hover{transform:translateY(-6px) scale(1.02);
box-shadow:0 12px 40px rgba(0,255,163,.12);}
@keyframes krl-holo-rotate{to{transform:rotate(360deg);}}
<div class="krl-holo-card">
<div class="krl-holo-card__icon">✦</div>
<div class="krl-holo-card__title">Holographic</div>
<div class="krl-holo-card__text">Hover me</div>
</div>