@media (max-width: 768px) {

	.navbar-toggle .icon-bar{
		background-color: #fff;
	}

	.navbar-toggle{
		padding-top: 50px;
		padding-bottom: 40px;
	}


	.navbar-collapse{
		background-color: #24272d;
	}

	.tel{
	
		padding-left: 15px;
		padding-bottom: 20px;
	}

	header{
		margin-top: 120px;
	}

	#principal-inst{
		height: 3200px;
	}

	#principal-inst p{
		padding:0px 0px 40px 0px;
		font-size: 15px;

	}

	#principal-inst h4{
		padding-top: 30px;
	}

	#principal-inst h5{
	padding-top: 0px;
	}

	#gris{
		height: 340px;
		text-align: center;
	}

	footer{
		height: 100px;
	}

}