#contactBtn {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
}

.popup {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgb(0, 0, 0);
    background-color: rgba(0, 0, 0, 0.4);
    padding-top: 60px;
}

.popup-content {
    background-color: #fefefe;
    margin: 5% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 500px;
}

#tel {
    width: 100%;
}

.closeBtn {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.closeBtn:hover,
.closeBtn:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

form {
    display: flex;
    flex-direction: column;
}

form label {
    margin-top: 10px;
    text-align: left;
}

form input,
form textarea,
form button {
    margin-top: 5px;
    padding: 10px;
    font-size: 16px;
}