@media screen and (min-width:1200px) {
	.substance{
		width: 75%;
	    margin: auto;
	}
	.title-el{
	   text-align: center;
	   margin-top: 15px;
	   font-size: 5rem;
	   letter-spacing: 15px;
	   font-weight: 600;
	   color: #f3f3f3;
	}
	.text{
		    line-height: 2;
		    font-size: 1.7rem;
		    padding-top: 15px;
		    text-align: center;
		    color: #868484;
	}
	.tag{
		border: 1px #ECECEC solid;
		width: 32%;
	    position: relative;
	    display: flex;
	    flex-wrap: nowrap;
		height: 80px;
		margin-bottom: 25px;
	}
	.tag-text{
		margin-left: 40px;
		margin-top: 30px;
		font-size: 1.7rem;
	}
	.title-els{
		    text-align: center;
		    margin-top: 15px;
		    font-size: 4rem;
		    letter-spacing: 20px;
		    font-weight: 600;
		    color: #eeeeee;
	}
	.images{
	margin-top: 35px;
	    display: flex;
	    justify-content: space-between;
	    width: 100%;
	    flex-wrap: nowrap;
	}
	.mask{
		position: relative;
		width: 24%;
	}
	.background{
		background-image: url(../img/a.jpg);
	}
	.Management-img img{
	width: 100%;
	}
	.Management-img{
		/* margin-top: 35px; */
		width: 100%;
		/* height: 400px; */
		/* padding-bottom: 30px; */
	}
}

@media screen and (min-width:960px) and (max-width:1200px) {
  .substance{
  	width: 75%;
      margin: auto;
  }
  .title-el{
  	    text-align: center;
  	    margin-top: 15px;
  	    font-size: 4rem;
  	    letter-spacing: 20px;
  	    font-weight: 600;
  	    color: #f3f3f3;
  }
  .text{
  	    line-height: 2;
  	    font-size: 0.9rem;
  	    padding-top: 15px;
  	    text-align: center;
  	    color: #868484;
  }
  .tag{
  	border: 1px #ECECEC solid;
  	width: 32%;
      position: relative;
      display: flex;
      flex-wrap: nowrap;
  	height: 80px;
  	margin-bottom: 25px;
  }
  .tag-text{
  	    margin-left: 40px;
  	    margin-top: 30px;
  }
  .title-els{
  	    text-align: center;
  	    margin-top: 15px;
  	    font-size: 4rem;
  	    letter-spacing: 20px;
  	    font-weight: 600;
  	    color: #eeeeee;
  }
  .images{
  margin-top: 35px;
      display: flex;
      justify-content: space-between;
      width: 100%;
      flex-wrap: nowrap;
  }
  .mask{
  	position: relative;
  	width: 24%;
  }
  .background{
  	background-image: url(../img/a.jpg);
  }
  .Management-img img{
  width: 100%;
  	height: 100%;
  }
  .Management-img{
  	margin-top: 35px;
  	width: 100%;
  	height: 400px;
  	padding-bottom: 30px;
  }
}

@media screen and (max-width:960px) {
   .substance {
       width: 90%;
       margin: auto;
   }
   .title-el {
       text-align: center;
       margin-top: 15px;
       font-size: 3rem;
       letter-spacing: 10px;
       font-weight: 600;
       color: #f3f3f3;
   }
   .text {
       line-height: 2;
       font-size: 1rem;
       padding-top: 15px;
       text-align: center;
       color: #868484;
   }
   .tag {
       border: 1px #ECECEC solid;
       width: 100%;
       position: relative;
       display: flex;
       flex-wrap: nowrap;
       height: 80px;
       margin-bottom: 25px;
   }
   .tag-text {
       margin-left: 45px;
       margin-top: 29px;
       font-size: 20px;
   }
   .title-els {
       text-align: center;
       margin-top: 15px;
       font-size: 3.5rem;
       letter-spacing: 10px;
       font-weight: 600;
       color: #e1e1e1;
   }
   .images{
	margin-top: 35px;
    width: 100%;
   }
   .mask {
       position: relative;
       width: 100%;
       margin: 20px 0;
   }
   .background {
       background-image: url(../img/a.jpg);
       background-repeat: no-repeat;
   }
   .Management-img img {
       width: 100%;
   }
   .Management-img {
       margin-top: 35px;
       width: 100%;
       /* height: 400px; */
       padding-bottom: 30px;
   }
}

body{
	padding: 0px;
	margin: 0px;
}
.entirety{
	width: 100%;
	margin: 0px;
}
.nav{
	width: 100%;
	height: 60px;
	background-color: #0D42B6;
}
.main-image{
	width: 100%;
	/* height: 28rem; */
}
.main-image img{
	width: 100%;
	height: 100%;
}

.title{
	    position: relative;
	    width: 100%;
}


.title-ch{
	    position: absolute;
	    width: 100%;
	    text-align: center;
	    font-size: 2.7rem;
	    margin-top: -31px;
	    font-weight: 600;
}

.module{
	    width: 100%;
	    display: flex;
	    flex-wrap: wrap;
		justify-content: space-between;
		margin-top: 35px;
}


.tag-left{
	background-color: #ECECEC;
	width: 13%;
}
.tag-right{
	background-color: #fff;
		width: 87%;
}
.tag-right:hover{
	background-color: #013F70;
	color: #fff;
	width: 87%;
	cursor: pointer;
}
.tag-img{
	    position: absolute;
	    margin-left: -20px;
	    margin-top: 20px;
		background-color: #013F70;
		border-radius: 50%;
		border: 1px #013F70 solid;
		width: 40px;
		height: 40px;
}
.tag-img img{
	    margin-top: 6px;
	    margin-left: 6px;
}




.mask .mask-img{
	width: 100%;
		    height: 180px;

}
.mask .mask-img img{
	width: 100%;
	height: 100%;
}
.mask .mask-text{
	position: absolute;
	    margin-top: -181px;
	    color: #fff;
	    height: 180px;
	    text-align: center;
	    background-color: #24242491;
	    line-height: 180px;
	    font-weight: 600;
	    letter-spacing: 2px;
	    font-size: 1rem;
		cursor: pointer;
		    width: 100%;
}
.link{
    width: 100%;
	height: 2px;
    margin-top: 30px;
	background-color:#cccccc;
	position: relative;
}
.mask:hover{
	.link-select{
	    width: 33%;
	    height: 3px;
	    border-radius: 10px;
	    background-color: #000;
	    position: absolute;
	    margin-top: 29px;
	    z-index: 99;
		    width: 100%;
	}
}