<button class="gravity-btn">
        <span class="gravity-text">Gravity Wave</span>
        <div class="spacetime-grid">
          <div class="grid-line line-h-1"></div>
          <div class="grid-line line-h-2"></div>
          <div class="grid-line line-h-3"></div>
          <div class="grid-line line-v-1"></div>
          <div class="grid-line line-v-2"></div>
          <div class="grid-line line-v-3"></div>
        </div>
        <div class="wave-distortion"></div>
      </button>