SVG

SVG Border Animation Card

SVGのrectストロークがカード外周を一周するボーダーアニメーション。

HTML

<div class="sbac-card">
  <svg class="sbac-border" viewBox="0 0 280 180">
    <rect class="sbac-rect" x="1" y="1" width="278" height="178" rx="15" fill="none" stroke="#6366f1" stroke-width="2"></rect>
  </svg>
  <div class="sbac-content">
    <h3>Trace Border</h3>
    <p>SVG animated outline</p>
  </div>
</div>

CSS

.sbac-card {
  position: relative;
  width: 280px;
  height: 180px;
  background: #18181b;
  border-radius: 16px;
}
.sbac-border {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.sbac-rect {
  stroke-dasharray: 916;
  stroke-dashoffset: 916;
  animation: sbac-trace 3s ease-in-out infinite;
}
@keyframes sbac-trace {
  0% { stroke-dashoffset: 916; }
  50% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -916; }
}
.sbac-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: #e2e8f0;
}
.sbac-content h3 { margin: 0 0 4px; font-size: 18px; }
.sbac-content p { margin: 0; font-size: 12px; opacity: 0.6; }

SVG Border Animation Card

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