body {
    background: #f5f5f5;
    font-family: Arial, sans-serif;
}
h2 {
    text-align: center;
    margin-top: 40px;
}
.login-form {
    background: #fff;
    max-width: 340px;
    margin: 40px auto 0 auto;
    padding: 28px 28px 18px 28px;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
label {
    font-weight: 500;
}
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 8px 10px;
    margin-top: 4px;
    margin-bottom: 12px;
    border: 1px solid #bbb;
    border-radius: 4px;
    font-size: 1em;
    box-sizing: border-box;
}
button[type="submit"] {
    width: 100%;
    background: #388e3c;
    color: #fff;
    border: none;
    padding: 10px 0;
    border-radius: 4px;
    font-size: 1.08em;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}
button[type="submit"]:hover {
    background: #2e7031;
}
div[style*="color:red"] {
    margin: 0 auto 10px auto;
    max-width: 340px;
    text-align: center;
}
div[style*="margin-top:15px;"] {
    text-align: center;
}
a {
    color: #388e3c;
    text-decoration: none;
    font-weight: 500;
}
a:hover {
    text-decoration: underline;
}