body {
    font-family: 'Noto Sans JP', sans-serif; 
}

.font-orbitron {
    font-family: 'Orbitron', sans-serif;
}
.timeline-item:before {
    content: '';
    position: absolute;
    top: 1rem;
    left: -0.6rem;
    width: 1.2rem;
    height: 1.2rem;
    background-color: white;
    border: 4px solid #3b82f6;
    border-radius: 50%;
    z-index: 1;
}
.slide {
    opacity: 0;
    transition: opacity 1s ease-in-out;
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}
.slide.active {
    opacity: 1;
}