body {
    font-size: 14px;
    line-height: 1.5;
}

.container {
    position: relative;
    margin: 0 auto;
    width: 80%;
    display: block;
    overflow: hidden;
}

.teaser-wrapper {
    display: flex;
    justify-items: space-between;
    flex-direction: row;
    margin-top: 50px;
}

.option-b {
    display: flex;
    flex-direction: row;
    margin: 0;
    flex: 1 0 50%;
}

.teaser {
    margin-top: 25px;
    margin-bottom: 25px;
    margin-right: 25px;
    margin-left: 25px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex: 1 1 25%;
    hyphens: auto;
}

ul {
    padding: 0;
    margin: 25px 0 0 0;
}

ul li {
    list-style: none;
    margin: 0 0 15px 0;
    padding: 0;
}

.option-b .teaser {
    flex: 1 1 50%;
}

a {
    margin: 0 5px;
    color: gray;
}

a:hover {
    color: black;
}

h1 {
    font-size: 1.25rem;
}

h2 {
    font-size: 1.15rem;
}


/* thumbnail images */

.thumb {
    border: 1px solid #ddd;
    border-radius: 3px;
    padding: 5px;
}

body {
    font-family: sans-serif;
}


/* ------------------------------------------------ */

.screen {
    margin: 0 auto;
    max-width: 600px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: top center;
    /* border nötig, damit die Animation über BG platziert wird */
    border: 10px solid transparent
}

img {
    max-width: 100%;
    box-sizing: border-box;
}

.animation {
    width: 100%;
    display: block;
    margin: 0 auto;
}

.animation.device {
    margin-top: 414px;
    width: 327px;
}

.bottom_container {
    position: relative;
}

.uhrersatz {
    position: absolute;
    top: 12.5%;
    left: 7%;
    max-width: 20%;
}

.uhrersatz.device {
    top: 76.5%;
    left: 32.5%;
    max-width: 8%;
}

.uhrzeit {
    position: absolute;
    top: 18.25%;
    left: 12.5%;
    font-size: 18px;
    letter-spacing: 3px;
    font-family: monospace;
}

.uhrzeit.device {
    top: 84.75%;
    left: 34.25%;
    font-size: 10px;
}

.bg {
    position: relative;
    margin: auto;
    width: 800px;
    max-height: 800px;
    background-image: url(test_800x2000.jpg);
    background-color: #ffffff;
    background-repeat: no-repeat;
    background-position: top;
    background-size: contain;
    height: 800px;
}

.goBackBtnForm {
    position: -webkit-sticky;
    position: sticky;
    top: 10px;
}

@media only screen and (max-width: 720px) {
    .container {
        max-width: 100%;
        width: 100%;
    }
    .container.home {
        width: 95%;
    }
    .teaser-wrapper {
        flex-direction: column;
    }
    .teaser {
        margin: 25px 0 25px 0;
    }
    .option-b {
        flex-direction: column;
        margin: 0;
    }
    .goBackBtnForm {
        position: relative;
        top: unset;
    }
    .uhrzeit {
        left: 9.5%;
        font-size: 0.75rem;
    }
}