html, 
body,
* {
    margin: 0;
    padding: 0;

    --theme: 200;
}
#login-bck {
    background-image: url('./login-background.jpeg');
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 100vh;
}
#login-container {
    background-color: hsla(var(--theme), 50%, 20%, 0.7);
    backdrop-filter: blur(5px);
    color: #fff;
    left: 50%;
    max-width: 350px;
    position: absolute;
    text-align: center;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 70%;
}
#login-container h1 {
    padding: 20px;
    margin: 10px;
}
#login-form {
    align-content: center;
    align-items: stretch;
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin: 20px;
}
#login-form input {
    margin: 7px auto;
    padding: 7px;
    width: 70%;
}
#login-form button {
    background-color: hsl(var(--theme), 100%, 40%);
    border: none;
    border-radius: 7px;
    color: inherit;
    cursor: pointer;
    margin: 15px;
    padding: 10px;
    transition: background-color 300ms ease-in-out;
}
#login-form button:hover,
#login-form button:focus {
    background-color: hsl(var(--theme), 100%, 30%);
}