* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1rem;
    font-weight: normal;
    text-align: center;
}

.flaggen {
    position: absolute;
    top: 5px;
    right: 5px;
    display: inline;
}

img.flag {
    width: 40px;
    height: auto;
    margin-left: 10px;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 95%;
    height: auto;
    margin: 0 auto;
}

header {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 20rem;
    background-image: url("../img/slider.jpg");
    background-position: right center;
    background-repeat: no-repeat;
    background-size: cover;
    text-align: left;
}

header img.logo {
    width: 400px;
    left: 2rem;
    height: auto;
}

.container .flex {
    top: 0;
    right: 0;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-evenly;
    align-items: stretch;
}

.container .flex .halb {
    max-width: 35%;
    min-width: 400px;
    margin-bottom: 3rem;
}

.container .flex .halb:first-of-type {
    margin-right: 3rem;
}
@media (max-width: 900px) {
    .container .flex .halb:first-of-type {
        margin-right: 0;
    }
}

.bold {
    font-weight: bold;
}

.red {
    color: #993333;
}

.redirect {
    display: block;
    font-size: 1.4rem;
    font-weight: bold;
    background-color: #006699;
    color: white;
    padding: 1rem;
}

.redirect #counter {
    font-size: 2.2rem;
}

h1 {
    color: #993333;
    padding-bottom: 2rem;
    padding-top: 2rem;
}

h2 {
    color: #993333;
    padding-bottom: 2rem;
    font-size: 1.3rem;
}

p {
    line-height: 1.4rem;
    margin-bottom: 0.5rem;
}

a.button, a.button-redirect {
    display: block;
    color: white;
    max-width: 15rem;
    padding: 0.5rem 1rem;
    margin-left: 1rem;
    cursor: pointer;
    text-decoration: none;
    border-radius: 1rem;
}

.button.center {
    margin: 0 auto;
}

a.button {
    background-color: #993333;
}

a.button-redirect {
    background-color: #006699;
    opacity: 0.2;
}

.button-redirect.invisible {
    display: none;
    opacity: 0;
}

a {
    color: #006699;
    text-decoration: none;
    font-weight: bold;
}

a:hover {
    text-decoration: underline;
}

address {
    padding-top: 2rem;
}

address span.bold.red {
    font-size: 1.3rem;
    text-transform: uppercase;
}

@media (max-width: 850px) {
    header { height: 10rem; margin-bottom: 2rem;}
    header img:not(img.flag) { width: 300px; }
    header img.flag { margin: 0 1rem;}
    h1 { font-size: 1.3rem; }
    p, address { font-size: 1rem; }
    a.button { border-radius: 0.8rem; margin-top: 0.5rem;}
    .container .flex .halb { min-width: 250px; max-width: 95%; margin: 0; padding: 0; margin-bottom: 1rem; }
}