html,body{
  width: 100%;
  height: 100%;
}
body{
  background-color: #e8e8e7;
  background-image: url("../images/cover_page.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  font-family: "Arial";
  color: #173452;
  font-size: 12px;
  line-height: 16px;
}
body *{
  box-sizing: border-box;
}
a{
  text-decoration: none;
  color: #173452;
}
a:hover{
  color: #000000;
}
header{
  text-align: center;
  padding: 10px 0;
  position: absolute;
  width: 100%;
  top: 0;
}

.site-info{
  position: absolute;
  width: 100%;
  bottom: 0;
  padding-bottom: 20px;
  text-align: center;

}

.site-info .address{
  padding-bottom: 10px;
}
.site-info .contacts{
  padding-bottom: 10px;
}
.site-info .social a{
  display: inline-block;
  margin: 0 10px;
}

#wrapper{
  height: 100%;
}

#wrapper .main{
  display: table;
  width: 100%;
  height: 90%;
}

#wrapper .main .text-block{
  height: 100%;
  display: table-cell;
  vertical-align: middle;
  text-align: center;
}

#tags{
  font-size: 35px;
  font-weight: bold;
  line-height: 35px;
}

@media only screen and (min-width: 790px) {
  body{
    font-size: 14px;
  }
  header{
    padding: 30px;
  }
  header .logo{
    float: left;
  }
  header .note{
    float: right;
    text-align: right;
    font-size: 11px;
  }
  .site-info{
    text-align: left;
    padding: 10px 40px 20px;
    font-size: 12px;
    line-height: 22px;
  }
  .site-info .container{
    max-width: 1100px;
    margin:0 auto;
  }
  .site-info .address{
    float: left;
    width: 50%;
  }
  .site-info .contacts{
    float: left;
    width: 30%;
  }
  .site-info .social{
    float: left;
    width: 20%;
    text-align: right;
  }
  .site-info .social a{
    display: block;
  }

  #tags{
    font-size: 85px;
    font-weight: bold;
    line-height: 65px;
  }

}
@media only screen and (min-width: 1200px) {
  #tags{
    font-size: 115px;
    line-height: 115px;
  }
}

@media only screen and (min-width: 1400px) {
  header{
    padding: 50px;
  }
  #tags{
    font-size: 145px;
    line-height: 145px;
  }
}