body {
    font-family: system-ui, -apple-system, sans-serif;
    margin: 0;
    padding: 20px;
    border: 1px solid;
}
.main-container {
    background-color: #242424;
    padding: 1rem;
}

.container {
    display: flex;
    justify-content: center;
    padding: 1rem;
    gap: 1rem;
}

.container-1, .container-2 {
    width: 25%;
    min-height: 400px;
    border: 2px dashed #646cff;
    border-radius: 8px;
    padding: 1rem;
}

.item {
    padding: 1rem;
    margin: 5px 0;
    background-color: #1a1a1a;
    color: white;
    border: 1px solid #646cff;
    border-radius: 4px;
    cursor: pointer;
}

@media only screen and (max-width: 600px) {
    .container {
        display: flex;
        flex-direction: column;
    }
    .container-1, .container-2{
        width: 100%;
    }
  }