* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: rgb(39, 37, 37);
    color: white;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5rem;
    margin: 1rem;
    transition: all 0.3s ease-in;
}

h1 {
    font-size: 3rem;

    /* ANIMATION */
    opacity: 0;
    transform: translateY(-500%);
    transition: 1.5s ease;
}

h1.show {
    opacity: 1;
    transform: translateY(0);
}

.card-container {
    width: 100%;
    max-width: 400px;
    background-color: rgba(0, 0, 0, 0.356);
    padding: 1rem;
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    border-radius: 10px;
    /* ANIMATION */
    opacity: 0;
    transform: translateX(100%);
    transition: 1.5s ease;
}

.card-container.show {
    opacity: 1;
    transform: translateX(0);
}


.card {
    width: 100px;
    height: 100px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.card:hover {
    transform: scale(1.05);
}

.red {
    background-color: red;
}

.yellow {
    background-color: yellow;
}

.pink {
    background-color: pink;
}

.blue {
    background-color: blue;
}

.teal {
    background-color: teal;
}

.springgreen {
    background-color: springgreen;
}