.intro-1 {
    height: 800px;
}
.intro-2 {
    height: 800px;
}
.intro-3 {
    height: 800px;
}

@media (max-width: 991px) {
    .intro-1 {
        height: 1100px;
    }
    .intro-2 {
        height: 1400px;
    }
    .intro-3 {
        height: 1200px;
    }
}

.btn-primary {
    background-color: #754fca !important;
}

.bg-zerkalo {
    background-color: #9468d8;
}