/* 作者：懒人之家 www.lanrenzhijia.com */
.about_img_back{
    width:100%;
    height:100%;
    position:absolute;
    left:0;
    top:0;
    -webkit-transform: translate(0,0);
    -moz-transform: translate(0,0);
    -o-transform: translate(0,0);
    -ms-transform: translate(0,0);
    transform: translate(0,0);
}

.fadeInLong {
  -webkit-animation: fadeIn 5s ease 0s 1 both;
  -ms-animation: fadeIn 5s ease 0s 1 both;
  -moz-animation: fadeIn 5s ease 0s 1 both;
  -o-animation: fadeIn 5s ease 0s 1 both;
          animation: fadeIn 5s ease 0s 1 both;
		  background:#010101;
}
.fadeOutLong {
  -webkit-animation: fadeOut 5s ease 0s 1 both;
  -ms-animation: fadeOut 5s ease 0s 1 both;
  -moz-animation: fadeOut 5s ease 0s 1 both;
  -o-animation: fadeOut 5s ease 0s 1 both;
          animation: fadeOut 5s ease 0s 1 both;
		   background:#010101;
}
@-webkit-keyframes fadeOut {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 0;
  }
}

@keyframes fadeOut {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 0;
  }
}

@-webkit-keyframes fadeIn {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 0.6;
  }
}

@keyframes fadeIn {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 0.6;
  }
}