Techniques
Acid Glow Pulse
A pulsing neon glow that radiates from interactive elements on hover — the blacklight-reactive smiley effect.
.element {
box-shadow: 0 0 24px rgba(255, 236, 0, 0.6);
transition: box-shadow 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.element:hover {
box-shadow: 0 0 40px rgba(255, 236, 0, 0.8),
0 0 80px rgba(255, 236, 0, 0.3);
}
@keyframes glow-pulse {
0%, 100% { box-shadow: 0 0 24px rgba(255, 236, 0, 0.6); }
50% { box-shadow: 0 0 40px rgba(255, 236, 0, 0.8); }
}
Photocopier Degradation
Simulates the look of a third-generation photocopied flyer — slight noise, desaturation at edges, and a gritty texture overlay.
.element {
position: relative;
image-rendering: auto;
}
.element::after {
content: '';
position: absolute;
inset: 0;
background: repeating-linear-gradient(
0deg,
transparent,
transparent 2px,
rgba(255, 236, 0, 0.03) 2px,
rgba(255, 236, 0, 0.03) 4px
);
mix-blend-mode: overlay;
pointer-events: none;
}
Smiley Face Hero
The iconic acid house smiley rendered in pure CSS — two dot eyes and a curved mouth on an acid yellow circle.
.smiley {
width: 120px;
height: 120px;
background: #FFEC00;
border-radius: 50%;
position: relative;
box-shadow: 0 0 40px rgba(255, 236, 0, 0.5);
}
.smiley::before {
content: '';
position: absolute;
top: 38px;
left: 30px;
width: 16px;
height: 16px;
background: #0A0A0A;
border-radius: 50%;
box-shadow: 44px 0 0 0 #0A0A0A;
}
.smiley::after {
content: '';
position: absolute;
bottom: 28px;
left: 50%;
transform: translateX(-50%);
width: 56px;
height: 28px;
border-bottom: 6px solid #0A0A0A;
border-radius: 0 0 50% 50%;
}