:root {
    --dark: #212121;
}

body {
    font-family: Arial, sans-serif;
    background-image: url('./background.png');
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    overflow-x: hidden;
}

.transition-1 {
    position: fixed;
    top: 0;
    left: -50%;
    bottom: 0;
    width: 50%;
    z-index: 999999;
    background: var(--dark);
    transition: 0.5s ease-out;
}

.transition-1.active {
    left: 0;
}

.transition-2 {
    position: fixed;
    top: 0;
    right: -50%;
    bottom: 0;
    width: 50%;
    z-index: 999999;
    background: var(--dark);
    transition: 0.5s ease-out;
}

.transition-2.active {
    right: 0;
}