body {
    font-family: 'Montserrat', -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";
}

.navbar {
    transition: background 0.2s;
}
.navbar.navbar-light {
    background: #fffc;
}

.navbar.navbar-light .navbar-brand img {
    content: url('../img/logo-navbar.png');
}

.navbar .nav-link {
    text-transform: uppercase;
    font-weight: bold;
}

@media (min-width: 1140px) {
    .navbar .nav-item .nav-link {
        padding-right: .7rem;
        padding-left: .7rem;
    }
}
@media (min-width: 1200px) {
    .navbar .nav-item .nav-link {
        padding-right: 1rem;
        padding-left: 1rem;
    }
}

.navbar-collapse .nav-item {
    text-align: right;
}

#start {
    height:100vh;
    width:100%;
    overflow:hidden;
    position: relative;
    background-image: url('../img/bg.jpg');
    background-size: cover;
    background-position: 50% 50%;
}
#start-description {
    position: absolute;
    top:50%;
    transform: translateY(-50%);
    width:100%;
}
#start-description .row > div {
    text-align: center;
}
#start-description .row > div img {
    max-width: 90%;
}
@media (max-width: 767px) {
    #start-description .row > div img {
        margin-top:2rem;
        max-width: 80%;
    }
}
.promo-block {
    display: inline-block;
    background:#000a;
    padding: 2rem;
    max-width:100%;
    border-radius: 20px;
    font-weight: bold;
    font-size: 1.2rem;
}
.promo-block h1 {
    margin-right: 30px;
}
/* .bg-block {
    background:#000a;
    padding: 2rem;
    border-radius: 20px;
}
.text-center.bg-block {
    padding: 1rem;
} */

h1, h2 {
    font-weight: bold;
}

hr {
    border-color: #8bc34a;
    border-width: 4px;
    border-style: dashed;
    width: 150px;
    margin: 2rem auto;
    max-width:100%;
}
hr.mini {
    border-width: 2px;
    width: 50px;
    margin-top:1.5rem;
    margin-bottom:1.5rem;
}
hr.big {
    width: 250px;
}
hr.left {
    margin-left:0;
}
hr.right {
    margin-right:0;
}


article {
    padding-top: 7rem;
    padding-bottom: 9rem;
}
#contact {
    padding-bottom: 5rem;
}

.colored {
    color:#fff;
}
.colored hr {
    border-color:#fff;
}

.orange-bg {
    background:#ef6c00;
}
.text-orange {
    color:#ef6c00;
}
.green-bg {
    background:#8bc34a;
}
.text-green {
    color:#8bc34a;
}
.black-bg {
    background:#212529;
}
.text-black {
    color:#212529;
}

.desk-bg {
    background-image: url('../img/bg3.jpg');
    background-size: cover;
    background-position: 50% 50%;
}

.forest-bg {
    background: linear-gradient(#000a, #000a), url('../img/bg4.jpg');
    background-size: cover;
    background-position: 50% 50%;
}

a {
    color: #212529;
}
a:hover {
    color: #212529aa;
}
.colored a {
    color: #fff;
}
.colored a:hover {
    color: #fffa;
}
#colaboration-handshake {
    max-width:100%;
    border-radius: 20px;
}
#contact-warsaw {
    max-height:230px;
    border-radius: 20px;
}
body>footer {
    font-size: 0.8rem;
    padding:0.8rem;
}

#colaboration-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
}
#colaboration-list > li {
    margin-bottom: 1rem;
}
#colaboration-list > li:before {
    content: "■ ";
    color: #8bc34a;
}

.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    z-index: 9999;
    transition-duration: 2s, 0s;
    transition-property: opacity, visibility;
    transition-delay: 1s, 3s;
}
.loader.hidden{
    opacity:0;
    visibility: hidden;
}

.loader .square-spin div {
    background: #8bc34a;
}