body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}
.logo{
    width:100px;
    margin:0 auto;
}
header {
    background: #333;
    color: #fff;
    padding: 1rem;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin-right: 10px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}

main {
    padding: 2rem;
}

.login-container {
    width: 300px;
    margin: 100px auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    text-align: center;
}

.login-container input {
    width: calc(100% - 22px);
    padding: 10px;
    margin-bottom: 10px;
}

.login-container input[type="submit"] {
    background: #333;
    cursor: pointer;
    width: 100%;
    border: 1px solid #333;
    color: #fff;
}
.brand-logo{
    width: 50px;
}
.error {
    color: red;
}