.carousel-item {
    height: 100vh;
    min-height: 300px;
    background: no-repeat center center scroll;
    background-size: cover;
}

.carousel-item img {
    opacity: 0.5;
    object-fit: cover;
}

.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2;
}

.login-box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
}