.lanmuc-banm{width: 100%; height: 100vh;}
/*====================导航*********/

@media only screen and (min-width: 1680px){
.lanmuc-banm .cont {
	position:relative;
    max-width: 100%;
    padding: 0 240px;
	
	
}
}
@media only screen and (max-width: 1679px)and (min-width: 1200px){
.lanmuc-banm .cont{max-width:1200px;	position:relative; margin:0 auto;}
}

.lanmuc-banm .cont .m-logo{float:left; height: 80px;}
.lanmuc-banm .cont .m-logo img{height: 100%; width: auto;}



.lanmuc-banm .banner{
	width: 100%;
}
.lanmuc-banm .banner img{
	width: 100%;
}
.slideshow {
  position: absolute;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}
@media only screen and (min-width: 1680px){
 .block_txt{
color: #fff; z-index: 99; font-size: 34px;
    position: absolute;
    bottom:148px;
    transform: translateY(40px);
    -webkit-transform: translateY(40px);
    -webkit-transition: all 300ms ease;
    transition: all 300ms ease;
    left: 240px;
}
}
@media only screen and (min-width: 1200px)and (max-width: 1679px){
 .block_txt {color: #fff; z-index: 99; font-size: 34px;
    position: absolute;
    bottom:148px;
    left: 50%;
    transform: translateY(40px);
    -webkit-transform: translateY(40px);
    -webkit-transition: all 500ms ease;
    transition: all 500ms ease;
margin-left:-600px;
}
}
 .slideshow-image {
  position: absolute;
  width: 100%;
  height: 100%;
  background: no-repeat 50% 50%;
  background-size: cover;
  -webkit-animation-name: kenburns;
          animation-name: kenburns;
  -webkit-animation-timing-function: linear;
          animation-timing-function: linear;
  -webkit-animation-iteration-count: infinite;
          animation-iteration-count: infinite;
  -webkit-animation-duration: 20s;
          animation-duration: 20s;
  opacity: 1;
  -webkit-transform: scale(1.2);
          transform: scale(1.2);
}
 .slideshow-image:nth-child(1) {
  -webkit-animation-name: kenburns-1;
          animation-name: kenburns-1;
  z-index: 3;
}
.slideshow-image:nth-child(2) {
  -webkit-animation-name: kenburns-2;
          animation-name: kenburns-2;
  z-index: 2;
}
.slideshow-image:nth-child(3) {
  -webkit-animation-name: kenburns-3;
          animation-name: kenburns-3;
  z-index: 1;
}
.slideshow-image:nth-child(4) {
  -webkit-animation-name: kenburns-4;
          animation-name: kenburns-4;
  z-index: 0;
}

@-webkit-keyframes kenburns-1 {
  0% {
    opacity: 1;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
  1.5625% {
    opacity: 1;
  }
  23.4375% {
    opacity: 1;
  }
  26.5625% {
    opacity: 0;
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  100% {
    opacity: 0;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
  98.4375% {
    opacity: 0;
    -webkit-transform: scale(1.21176);
            transform: scale(1.21176);
  }
  100% {
    opacity: 1;
  }
}

@keyframes kenburns-1 {
  0% {
    opacity: 1;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
  1.5625% {
    opacity: 1;
  }
  23.4375% {
    opacity: 1;
  }
  26.5625% {
    opacity: 0;
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  100% {
    opacity: 0;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
  98.4375% {
    opacity: 0;
    -webkit-transform: scale(1.21176);
            transform: scale(1.21176);
  }
  100% {
    opacity: 1;
  }
}
@-webkit-keyframes kenburns-2 {
  23.4375% {
    opacity: 1;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
  26.5625% {
    opacity: 1;
  }
  48.4375% {
    opacity: 1;
  }
  51.5625% {
    opacity: 0;
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  100% {
    opacity: 0;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
}
@keyframes kenburns-2 {
  23.4375% {
    opacity: 1;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
  26.5625% {
    opacity: 1;
  }
  48.4375% {
    opacity: 1;
  }
  51.5625% {
    opacity: 0;
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  100% {
    opacity: 0;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
}
@-webkit-keyframes kenburns-3 {
  48.4375% {
    opacity: 1;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
  51.5625% {
    opacity: 1;
  }
  73.4375% {
    opacity: 1;
  }
  76.5625% {
    opacity: 0;
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  100% {
    opacity: 0;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
}
@keyframes kenburns-3 {
  48.4375% {
    opacity: 1;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
  51.5625% {
    opacity: 1;
  }
  73.4375% {
    opacity: 1;
  }
  76.5625% {
    opacity: 0;
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  100% {
    opacity: 0;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
}
@-webkit-keyframes kenburns-4 {
  73.4375% {
    opacity: 1;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
  76.5625% {
    opacity: 1;
  }
  98.4375% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    -webkit-transform: scale(1);
            transform: scale(1);
  }
}
@keyframes kenburns-4 {
  73.4375% {
    opacity: 1;
    -webkit-transform: scale(1.2);
            transform: scale(1.2);
  }
  76.5625% {
    opacity: 1;
  }
  98.4375% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    -webkit-transform: scale(1);
            transform: scale(1);
  }
}