.hvac {
  border-style: outset;
	font-size: 1.8rem;
	font-weight: bold;
	border-width: 10px;
	border-color: #7E7E7E #666666 #7E7E7E #666666;
	background: #ECECEC;
	margin: 30px 30px 30px 30px;
	padding: 20px;
	box-shadow: rgba(0, 0, 0, 0.25) 0px 14px 28px, rgba(0, 0, 0, 0.22) 0px 10px 10px;
}

.grid-main {
	display: grid;
	grid-auto-rows: 4;
}

.b_sign_box {
	grid-row-start: 1;
	grid-row-end: 2;
	grid-column-start: 1;
	grid-column-end: 3;
	text-align: center;
	font-size: 3em;
	font-weight: bold;
	border-style: solid;
	border-width: 3px;
	border-color: black;
	border-radius: 20px;
	background: white;
	margin: 5% 35% 2.5% 35%;
}

.b_sign_grid {
	
	display: grid;
	grid-auto-rows: 2;
	
}

.b_sign_top {
	
	border-style: solid;
	border-color: black;
	background: black;
	color: white;
	padding: 20px;
	margin: 20px 20px 0px 20px;
	
}

.b_sign_top_circle {
	
	border-style: solid;
	border-color: red;
	border-radius: 500px;
	background: red;
	color: white;
	
}

.b_sign_bottom_1 {
	
	font-size: 1.2em;
	margin: 10px 0px 0px 0px;
	
}

.b_sign_bottom_2 {
	
	margin: 10px 0px 10px 0px;
	
}

.content_box {
	
	grid-row-start: 2;
	grid-row-end: 3;
	grid-column-start: 1;
	grid-column-end: 2;
	text-align: center;
	font-size: 3em;
	font-weight: bold;
	border-style: outset;
	border-width: 10px;
	border-color: #7E7E7E #666666 #7E7E7E #666666;
	background: #ECECEC;
	margin: 5% 10% 5% 25%;
	padding: 8px;
	box-shadow: rgba(0, 0, 0, 0.25) 0px 14px 28px, rgba(0, 0, 0, 0.22) 0px 10px 10px;
	
}

.content_title {
	
	border-bottom-style: solid;
	border-width: 2px;
	margin: 0% 8% 2% 8%;
	
}


.sect_heating {
	
	
	
}

.sect_heating_title {
	
	font-size: .7em;
	text-align: left;
	
}

.sect_heating_content {
	
	font-size: .4em;
	text-align: left;
	
}

.sect_heating_content ol li {
	
	list-style-type: upper-roman;
	
}

.sect_heating_content a {
	
	text-decoration: none;
	
}

.sect_heating_content a:hover {
	
	color: #1E90FF;
	
}

.sect_cooling {
	
	
	
}

.sect_cooling_title {
	
	font-size: .7em;
	text-align: left;
	
}

.sect_cooling_content {
	
	font-size: .4em;
	text-align: left;
	
}

.sect_cooling_content ol li {
	
	list-style-type: upper-roman;
	
}

.sect_cooling_content a {
	
	text-decoration: none;
	
}

.sect_cooling_content a:hover {
	
	color: #1E90FF;
	
}

.content_words {
	
	
	
}

.picture_box img{
	
	grid-row-start: 2;
	grid-row-end: 3;
	grid-column-start: 2;
	grid-column-end: 3;
	margin: 5% auto 5% 25%;
	border-style: outset;
	border-width: 10px;
	border-color: #7E7E7E #666666 #7E7E7E #666666;
	background: #ECECEC;
	box-shadow: rgba(0, 0, 0, 0.25) 0px 14px 28px, rgba(0, 0, 0, 0.22) 0px 10px 10px;
	
}

.title_heating {
	
	grid-row-start: 3;
	grid-row-end: 4;
	grid-column-start: 1;
	grid-column-end: 3;
	text-align: center;
	font-size: 3em;
	font-weight: bold;
	border-style: outset;
	border-width: 10px;
	border-color: #7E7E7E #666666 #7E7E7E #666666;
	background: #ECECEC;
	margin: 5% 35% 5% 35%;
	padding: 8px;
	box-shadow: rgba(0, 0, 0, 0.25) 0px 14px 28px, rgba(0, 0, 0, 0.22) 0px 10px 10px;
	
}

.Boiler_Steam_Frame {
	
	display: grid;
	grid-auto-columns: 2;
	grid-row-start: 4;
	grid-row-end: 5;
	grid-column-start: 1;
	grid-column-end: 3;
	text-align: center;
	font-size: 3em;
	font-weight: bold;
	border-style: outset;
	border-width: 10px;
	border-color: #7E7E7E #666666 #7E7E7E #666666;
	background: #ECECEC;
	margin: 0 10% 5% 10%;
	padding: 8px;
	box-shadow: rgba(0, 0, 0, 0.25) 0px 14px 28px, rgba(0, 0, 0, 0.22) 0px 10px 10px;
	
}

.Boiler_Steam_Left {
	
}

.Boiler_Steam_Title {
	
	grid-row-start: 1;
	grid-row-end: 2;
	grid-column-start: 1;
	grid-column-end: 2;
	
}

.Boiler_Steam_Para {

	grid-row-start: 2;
	grid-row-end: 3;
	grid-column-start: 1;
	grid-column-end: 2;
	font-size: .6em;
	margin: auto 5% auto auto;
	text-align: left;
	
}

.Boiler_Steam_Right {
	
}

.Boiler_Steam_Pic {
	
	grid-row-start: 1;
	grid-row-end: 3;
	grid-column-start: 2;
	grid-column-end: 3;
	
}

.Boiler_Steam_Pic img {
	
	width: 100%;
	margin: 25% auto auto auto;
	
}

.title_cooling {
	
	grid-row-start: 5;
	grid-row-end: 6;
	grid-column-start: 1;
	grid-column-end: 3;
	text-align: center;
	font-size: 3em;
	font-weight: bold;
	border-style: outset;
	border-width: 10px;
	border-color: #7E7E7E #666666 #7E7E7E #666666;
	background: #ECECEC;
	margin: 5% 35% 5% 35%;
	padding: 8px;
	box-shadow: rgba(0, 0, 0, 0.25) 0px 14px 28px, rgba(0, 0, 0, 0.22) 0px 10px 10px;
	
}