body{
  width: 100%;
  background-color: #fff;
}

.title-page{
  height: 36%;
  max-width: 80%;
  margin: 5ch 10%;
}
.main-header{
  margin: -2px;
  font-size: 30px;
  font-weight: 600;
  color: #1985fe;
  float: left;
}
.sub-header{
  margin-left: 80px;
  font-size: 22px;
  font-weight: 200;
  
}


/*_______________________________________________*/
.row{
  width: 84%;
  margin-left: 11%;

}
.col-sm-4{
  width: 26%;
  margin: 3% 2%;
	float:left;
  background-color: #fff;
  border-radius:10px;
  box-shadow: 10px 10px 20px #1985fe20;
}
.col-sm-4 img{
  width: 96%;
  margin: 2%;
  border-radius: 10px;
}
.col-sm-4 h2{/*标题*/
  font-size: 22px;
  margin: 0 2%;
  text-align: left;
  color: #000;
}
.col-sm-4 a{
  text-decoration: none;
  color: inherit;
}
.nwo_brief{
  text-align: left;
  width: 92%;
  margin: 10px 4%;
  height: 130px;
}
.nwo_brief p{
  margin: 30px 0 0 0 ;
  font-size: 12px;
}
.nwo_brief h3{/*内容*/
  font-size: 13px;
  font-weight: 200;
	letter-spacing:2px;
	text-indent: 0px;
  color: #272727;

}
.footer{
  width: 100%;
}
/*_______________________________________________*/

.return_home{
  position: fixed;
  bottom: 0;
  width: 60px;
  height: 50px;
  opacity: 01;/*透明度*/
  z-index: 200;
  right: 80px;
  top: 80px;
  display: block;
}
.return_home img{
  width: 50px;
}
/*_______________________________________________*/


.footer{
	/*
	background:url(../img/) left top repeat;
	*/
  clear:both;
	padding:30px 0 30px;
}/*底部图案*/
.footer-logo{
	margin:15px auto 35px;
	width: 200px;
}
.footer-logo img{
  width: 100%;
}
.copyright, .credits{
	color:#000;
	font-size:14px;
	display:block;
	text-align:center;
}
.credits a{
	color:#1985ff;
	font-weight:600;
	text-decoration: none;
	transition:all 0.3s ease-in-out;
	-moz-transition:all 0.3s ease-in-out;
	-webkit-transition:all 0.3s ease-in-out;
}

.credits a:hover {
	color: #a7d0ff;;
}


@media only screen and (max-width: 1000px) {
  .col-sm-4 h2{/*标题*/
    font-size: 15px;
  }
  .nwo_brief h3{/*内容*/
    font-size: 10px;
    font-weight: 300;
  }
  .nwo_brief p{
    font-size: 9px;
  }
  .return_home img{
    width: 38px;
  }
  .return_home{
    right: 60px;
    top: 60px;
  }
  .footer-logo{
    margin:15px auto 20px;
    width: 120px;
  }
  .copyright, .credits{
    font-size:10px;
  }

}
@media only screen and (max-width: 700px) {

  .col-sm-4 h2{/*标题*/
    font-size: 13px;
  }
  .nwo_brief h3{/*内容*/
    font-size: 8px;
    font-weight: 300;
  }
  .nwo_brief p{
    font-size: 9px;
  }
  .return_home img{
    width: 38px;
  }
  .return_home{
    right: 60px;
    top: 60px;
  }
  .footer-logo{
    margin:15px auto 20px;
    width: 120px;
  }
  .copyright, .credits{
    font-size:10px;
  }

}

@media only screen and (max-width: 479px) {
  .main-header{
    font-size: 28px;
    font-weight: 600;
  }
  .sub-header{
    margin-left: 50px;
    font-size: 18px;
    
  }
  .col-sm-4{
    margin: 10% 2%;
    width: 90%;
    margin-left: 0%;
  }
  .col-sm-4 h2{/*标题*/
    font-size: 19px;
  }
  .nwo_brief h3{/*内容*/
    font-size: 11px;
    font-weight: 300;
  }
  .nwo_brief{
    height: 90px;
  }
  .return_home img{
    width: 25px;
  }
  .return_home{
    right: -100px;
  }
  .footer-logo{
    margin:15px auto 20px;
    width: 120px;
  }
  .copyright, .credits{
    font-size:10px;
  }

}