body {
    font-family: Arial;
    background-color: #f2f2f2;
    padding: 10px;
}

h1, h2, h3 {
    text-align: center;
}

section {
    background: white;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
}

input, select, textarea {
    width: 100%;
    margin-bottom: 10px;
    padding: 5px;
}

button {
    width: 100%;
    padding: 8px;
    background: blue;
    color: white;
    border: none;
}

#error {
    color: red;
}
.tablero {
    display: flex;
    gap: 10px;
}

.columna {
    flex: 1;
    background: #ddd;
    padding: 10px;
    min-height: 200px;
}

.tarea {
    background: white;
    padding: 5px;
    margin-bottom: 5px;
    border-left: 5px solid black;
}

.baja {
    border-left-color: green;
}

.media {
    border-left-color: orange;
}

.alta {
    border-left-color: red;
}

@media (max-width: 700px) {
    .tablero {
        flex-direction: column;
    }
}
@media (max-width: 700px) {
    body {
        padding: 5px;
    }

    section {
        padding: 8px;
    }

    .tablero {
        flex-direction: column;
    }

    .columna {
        width: 100%;
        min-height: 150px;
    }

    button {
        margin-bottom: 5px;
    }

    input, select, textarea {
        font-size: 16px;
    }
}