.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 1;
    border: 10px;
    border-color: black;
}
.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    text-align: center;
}
.h1 {
    font-size: 55px;
    color: #79E6F7;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}
.image-row {
    display: flex;
    justify-content: center; 
    gap: 20px;             
}

#overlay.fade-out {
    animation: fadeOut 2s forwards;
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}
.custom-btn {
  text-align: center;
    margin-bottom:100px ;

}
.sidebar {
    position: fixed;
    top: 0;
    width: 220px;
    height: 100vh;
    background: rgba(0,0,0,.45);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    z-index: 100;
}
.sidebar {
    overflow-y: auto;
    scrollbar-width: none; /* Firefox */
}

.sidebar::-webkit-scrollbar {
    display: none;
}

.left {
    left: 0;
}

.container {
    margin-left: 240px;

}
.bottom-right-img {
    position: fixed;
    right: 20px;
    bottom: 5px;
    z-index: 1000;
}