/* =============================================================================
   particles CSS
   ========================================================================== */
.particles-block {
  position: relative;
  overflow: hidden; /* はみ出し防止 */
}

/* ---- particles.js container ---- */
#particles-js{
  width: 100%;
  height: auto;
  top: 0;
  left: 0;
  margin: 0 auto;
  z-index: 1;
  position: absolute;
  /*background-color: #b61924;*/
  background-image: url('');
  background-size: cover;
  background-position: 50% 50%;
  background-repeat: no-repeat;
}
/* ---- canvas ---- */
canvas{
  display:block;
  vertical-align:top;
}