html, body {
    background-image: url("../images/phon.png"); 
   background-repeat: no-repeat; 
   background-size: cover; 
}
h1 {
	font-size:5em;
	color: white;
	margin-top: 15%;
}
h2 {
	font-size: 2em;
	color: rgba(255, 255, 255, .8);
}

img {
	 margin-top: 50px;
}
.zag p {
	font-size: 2em;
	color: rgba(255, 255, 255, .8);
}
.zag {
	color: #fff;
	padding: 1em;
}

.footer {
	margin-top: 10%;
}
.knopki {
	justify-content: center;
}
.knopki a, .knopki a:visited{
	width: 14em;
	background-color: #314B7B;
	
	/* border: 1px solid rgba(255, 255, 255, .8); */
}
.knopki a:hover {
	background-color: rgb(239, 85, 28);
}
.knopki div.col-sm-12 {
		display: flex;
		justify-content: center;
	}
@media (min-width: 481px) and (max-width: 990px) {
img {
	width: 50%;
	margin: 0 auto;
}