body {
  background: #777;
}
.pattern {
  width: 100%;
  height: 100%;
  background: url(./img/haikei_yoko.png);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2;
}
.video-box {
  position: relative;
  overflow: hidden;
  width: 100%;
  height: 100vh;
}
.video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);

  z-index: 1;
}
p {
  width: 100%;
  font-family: serif;          
  color: #fff;
  font-size: 400%;
  position: absolute;
  text-align: center;
  top: 130px;
  z-index: 3;
}