#index_main {
	background: none;
	min-height: auto;
	}

#video {
	width: 1190px;
	display: block;
	margin: 0 auto;
	}

.m_video {
	width: 1190px;
	display: block;
	margin: 0 auto;
	height: 77vh;
}

#video video {
	height: 570px;
	}

#video img {
	width: 100%;
	}

.index_main_contact h2 {
	color: #000;
	}

.index_main_contact {
	padding-top: 40px;
	}

#index-service {
	padding-top: 0;
	}

@media(max-width: 739px){

body {
	overflow-x: hidden;
	}

#video {
	width: 100%;
	}

#video video {
	height: auto;
	}

ul.tri-list li img {
	width: 100%;
	}

#works_blog ul {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	}

#works_blog ul li {
	display: block;
	width: 48%;
	margin-right: 0;
	}


.m_video {
	width: 100%;
	height: 25vh;
}



}