:root{
    box-sizing: border-box;
    font-size: calc(1vw + 0.62em);
}

*, *::before, *::after{
    box-sizing: inherit;
}

@media (min-width: 50em){
    :root{
        font-size: 1.125em;
    }
}

body{
    background-color: #eef;
}

main{
    width: 75%;
    margin: 0 auto;

}

h1, h2{
    padding: 0.8em 0.4em;
    margin: 0;
}

label{
    font-weight: bolder;
}

form.login{
    margin: 0.4em;
    padding: 0.8em;
    border: 1px solid #333;
    border-radius: 1em;
}

form.login label{
    display: inline-block;
    width: 180px;
}

form.login .row{
    margin: 1em 0;
}

.info{
    margin: 1em 0;
    font-weight: bolder;
    font-size: 1.3em;
}

#login-error{
    color: #c00c00;
    font-weight: bolder;
    margin-top: 1em;
}

.ausgabe{
    color: darkred;
    font-size: 1.1em;
    text-shadow: 1px 1px 3px #fff;
}

.klasse{
    font-weight: bolder;
    font-size: 1.3em;
}