A slanted panel wipes across the button on hover. The pseudo-element is skewed and oversized so its angled edge crosses the whole width cleanly.
Also known as: diagonal fill button, angled wipe hover.
<button class="hfx-skew-fill">View pricing</button>
.hfx-skew-fill {
--c: var(--hfx-color, #3b82f6);
font-size: var(--hfx-size, 16px);
display: inline-flex;
align-items: center;
gap: 0.5em;
padding: 0.7em 1.6em;
border-radius: 0.5em;
font: 600 1em system-ui, sans-serif;
cursor: pointer;
position: relative;
isolation: isolate;
overflow: hidden;
border: 2px solid var(--c);
background: transparent;
color: var(--c);
transition: color 0.35s ease;}
.hfx-skew-fill::before {
content: "";
position: absolute;
inset: 0 -20%;
z-index: -1;
background: var(--c);
transform: skewX(-20deg) translateX(-120%);
transition: transform 0.35s ease;
}
.hfx-skew-fill:hover { color: #fff; }
.hfx-skew-fill:hover::before { transform: skewX(-20deg) translateX(0); }
@media (prefers-reduced-motion: reduce) {
.hfx-skew-fill, .hfx-skew-fill *, .hfx-skew-fill::before, .hfx-skew-fill::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}--hfx-color on the element or a parent.
Currently previewing #3b82f6.--hfx-size. Every other dimension is in
em, so the whole thing scales together. Currently previewing 16px.transition or animation
shorthand. Staggered delays are relative, so they keep their rhythm.