.dangky {
    max-width: 400px;/* không cố định */
    width: 100%;
    margin: 0px auto;
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.1);
}

.dangky p {
    margin: 10px 0 5px;
    font-weight: bold;
}

.dangky input[type="email"],
.dangky input[type="text"],
.dangky input[type="password"] {
    width: 400px;
    height: 30px;
    padding: 5px 10px;
    font-size: 14px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 5px;
}

.dangky input[type="submit"],
.dangky input[type="reset"] {
    padding: 7px 20px;
    margin-top: 15px;
    margin-right: 10px;
    background-color: #5A2A83;
    color: white;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.dangky input[type="submit"]:hover,
.dangky input[type="reset"]:hover {
    background-color: #7e43a6;
}

.thongbao {
    color: blue;
}