style.css

body {
    background-color: #0b2545; /* Dark blue background */
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

form#authForm {
    background-color: #0b2596; /* Light blue background */
    width: 300px;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    text-align: center;
    position: relative;
}

form#authForm input[type="text"],
form#authForm input[type="password"] {
    width: calc(100% - 20px);
    margin: 10px 0;
    padding: 8px;
    border: 1px solid #fff;
    border-radius: 5px;
    background-color: #0b4261;
    color: #fff;
    font-size: 14px;
}

form#authForm input[type="file"] {
    margin: 15px 0;
    padding: 8px;
    width: 100%;
    background-color: #2a6fa9;
    color: #fff;
    font-size: 14px;
    cursor: pointer;
    text-align: center;
    border: none;
}

form#authForm button {
    background-color: #fff;
    color: #2a6fa9;
    font-size: 16px;
    font-weight: bold;
    padding: 10px;
    width: 100%;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 10px;
}

form#authForm button:hover {
    background-color: #e0e0e0;
}

form#authForm::before {
    content: "LOGIN / SIGN UP";
    font-size: 18px;
    font-weight: bold;
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #2a6fa9;
    padding: 5px 10px;
    color: #fff;
    border-radius: 5px;
}