.apartment-container {
    display: flex;
    gap: 20px;
}
.apartment-left, .apartment-right {
    width: 48%;
    padding: 15px;
    border: 1px solid #ccc;
    border-radius: 6px;
    background: #fdfdfd;
}
.apartment-left label {
    font-weight: bold;
    display: block;
    margin-top: 8px;
}
.apartment-left input, 
.apartment-left select {
    width: 100%;
    padding: 6px;
    margin-bottom: 10px;
    border: 1px solid #aaa;
    border-radius: 4px;
}
.apartment-right span {
    font-weight: bold;
}
button {
    padding: 8px 14px;
    margin: 5px 0;
    border: none;
    border-radius: 4px;
    background: #0073aa;
    color: white;
    cursor: pointer;
}
button:disabled {
    background: #aaa;
}