nav	{
	margin-top: 10px;
}


h1		{
		font-family:georgia;
		text-align: center;
		border-style: solid;
		margin-top: 5px;
		background-color: yellow;
}

h4           {
               text-align: center;
}

.jumbotron {
		background-image: url("power-lines_background.jpg");
		margin-top: 10px;
}

    
img 	{
		margin-bottom: 5px;
}

.input-group-append 	{
		margin-bottom: 20px; 
}


div.gallery {
        /* display: flex;
        flex-wrap: wrap;
        justify-content: center; */
		margin: 30px; 
		border: 1px solid #ccc;
		float: left; 
		width: 320px;
		
	}
	
	div.gallery:hover {
		border: 1px solid #777;
	}
	
	
	div.gallery img {
		display: block;
		margin-left: auto;
		margin-right: auto;
		margin-top: 5px;
		width: 50%;
		height: 120px;
		
	}

.desc {
		padding: 15px;
		text-align: center;
	}
	
footer {
	display: block;
	margin:10px;  
}