#epoch-converter {
    max-width: 600px;
    margin: 20px auto;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

#epoch-converter .epoch-column {
    flex: 1;
    min-width: 250px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

#epoch-converter .epoch-input {
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
    color: black;
}

#epoch-converter .epoch-input[readonly] {
    background-color: #fff;
}

#epoch-converter .epoch-btn {
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 8px;
    font-size: 1em;
    color: black;
    cursor: pointer;
}

#epoch-converter .epoch-btn-primary {
    background-color: #9cfa6a;
}

#epoch-converter .epoch-btn-clear {
    background-color: #ff9999;
}

#epoch-converter .epoch-actions {
    width: 100%;
    text-align: center;
}

#epoch-converter input::placeholder {
    color: grey;
}

@media (max-width: 600px) {
    #epoch-converter {
        flex-direction: column;
    }
}