html,
body {
    height: 100%;
}
body {
    padding-top: 50px; 
}
.img-portfolio {
    margin-bottom: 30px;
}
.img-hover:hover {
    opacity: 0.8;
}
header.carousel {
    height: 50%;
}
header.carousel .item,
header.carousel .item.active,
header.carousel .carousel-inner {
    height: 100%;
}
header.carousel .fill {
    width: 100%;
    height: 100%;
    background-position: center;
    background-size: cover;
}
.error-404 {
    font-size: 100px;
}
.price {
    display: block;
    font-size: 50px;
    line-height: 50px;
}
.price sup {
    top: -20px;
    left: 2px;
    font-size: 20px;
}
.period {
    display: block;
    font-style: italic;
}
footer {
    margin: 50px 0;
	color:blue;	
}
@media(max-width:991px) {
    .customer-img,
    .img-related {
        margin-bottom: 30px;
    }
}
@media(max-width:767px) {
    .img-portfolio {
        margin-bottom: 15px;
    }
    header.carousel .carousel {
        height: 70%;
    }
}