html {
    scroll-behavior: smooth;
    transition: all ease 0.2s;
}

/* oswald-regular - latin */
@font-face {
    font-family: 'Oswald';
    font-style: normal;
    font-weight: 400;
    src: url('../fonts/oswald-v49-latin-regular.eot'); /* IE9 Compat Modes */
    src: local(''),
         url('../fonts/oswald-v49-latin-regular.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
         url('../fonts/oswald-v49-latin-regular.woff2') format('woff2'), /* Super Modern Browsers */
         url('../fonts/oswald-v49-latin-regular.woff') format('woff'), /* Modern Browsers */
         url('../fonts/oswald-v49-latin-regular.ttf') format('truetype'), /* Safari, Android, iOS */
         url('../fonts/oswald-v49-latin-regular.svg#Oswald') format('svg'); /* Legacy iOS */
  }  

body {
    background: #f7f7f7;
    padding: 0;
    margin: 0 auto;
    font-family: 'Source Sans Pro', sans-serif;
    line-height: 1.5em;
    transition: all ease-in-out 0.2s;
}

a {
    color: #2194c9;
}

strong {
    color: #ffffff;
}

h1 {
    font-family: 'Oswald', sans-serif;
    font-size: 3vh;
    letter-spacing: -0.02em;
    line-height: 1.2em;
    text-transform: uppercase;
}

@media(max-width: 780px) {
    h1 {
        font-size: 7vw;
    }
}

h2 {
    font-family: 'Oswald', sans-serif;
    font-size: 2vh;
    letter-spacing: -0.02em;
    line-height: 1em;
    text-transform: uppercase;
}

h3 {
    font-family: 'Oswald', sans-serif;
    font-size: 3vw;
    letter-spacing: -0.02em;
    line-height: 1em;
    text-transform: uppercase;
}

@media(max-width: 780px) {
    h3 {
        font-size: 7vw;
    }
}

h4 {
    font-family: 'Oswald', sans-serif;
    font-size: 1em;
    letter-spacing: -0.02em;
    line-height: 1em;
    text-transform: uppercase;
}

button {
    font-family: 'Oswald', sans-serif;
    font-size: 3vh;
    letter-spacing: -0.02em;
    line-height: 1em;
    text-transform: uppercase;
    background: #000000;
    padding: 20px;
    border: none;
    border-radius: 5px;
}

nav {
    position: fixed;
    z-index: 99;
    right: 0;
    left: 0;
    margin: 0 auto;
    padding: 50px;
    align-items: center;
    font-family: 'Oswald', sans-serif;
    font-size: 1.5em;
    text-transform: uppercase;
    background: none;
    color: #f2f2f2;
    display: flex;
    transition: all ease-in-out 0.3s;
}

@media(max-width: 640px) {
    nav {
        padding: 20px;
        font-size: 4.4vw;
    }
}

nav.scroll {
    background: #18212b;
}

nav span {
    display: inline; 
    padding: 0px 20px 0px 20px;
}

@media(max-width: 640px) {
    nav span {
        padding: 0px 10px 0px 10px;
    }
}

nav a {
    color: white;
    text-decoration: none;
}

.nav_contents {
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
    align-items: center;
    display: flex;
}

@media(max-width: 640px) {
    .nav_contents {
        width: auto;
    }
}

span.logo img {
    width: 120px;
}

@media(max-width: 640px) {
    span.logo {
        display: none;
    }
}

.links {
    display: inline;
    position: relative;
    margin: 0 0 0 auto;
}

.floatingbutton {
    z-index: 99;
    position: fixed;
    margin: 10px;
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    text-align: center;
    font-size: 1.7em;
    line-height: 45px;
    display: none;
}

@media(max-width: 640px) {
    .floatingbutton {
        display: block;
    }
}

#backtotop {
    bottom: 0;
    right: 0;
}

#gettickets {
    bottom: 0;
    left: 0;
    width: 50%; 
}

.anchor {
    position: absolute;
    margin-top: -140px;
}

@media(max-width: 640px) {
    .anchor {
        margin-top: -60px;
    }
}

#header {
    height: 70vh;
    min-height: 400px;
    background: url("images/bt_bg.jpg") fixed no-repeat #000000;
    background-size: cover;
    display: flex;
    align-items: center;
}

@media(max-width: 780px) {
    #header {
        background: url("images/bt_bg.jpg") 69% no-repeat #000000;
        background-size: cover;
    }
}

.header_container {
    max-width: 1600px;
    margin: 0 auto;
}

.logo_large {
    width: 10vw;
    max-width: 1198px;
    margin: 100px auto 20px auto;
    display: flex;
    align-items: center;
}

@media(max-width: 780px) {
    .logo_large {
        width: 30vw;
    }
}

.logo_large img {
    width: 100%;
}

.headline {
    font-family: 'Oswald', sans-serif;
    color: #f2f2f2;
    letter-spacing: -0.02em;
    text-align: center;
    text-transform: uppercase;
}

@media(max-width: 640px) {
    .headline {
        font-size: 10vw;
    }
}

#main-content {
    text-align: justify;
}

@media(max-width: 780px) {
    #main-content {
        font-size: 0.9em;
    }
}

@media(max-width: 320px) {
    #main-content {
        line-height: 2em;
        font-size: 0.7em;
    }
}

.section_container {
    background: inherit;
}

.section_container_white {
    background: #fff;
}

#section_container_kontakt {
    padding-bottom: 80px;
    background: #fff;
}

#leistungen {
    padding: 3.5vh 50px 3.5vh 50px;
    max-width: 900px;
    margin: 0 auto;
}

#about {
    padding: 3.5vh 50px 3.5vh 50px;
    max-width: 900px;
    margin: 0 auto;
}

#about img {
    max-width: 100%;
}

#partner {
    padding: 3.5vh 50px 3.5vh 50px;
    max-width: 900px;
    margin: 0 auto;
    text-align: left;
}

#partner img {
    max-width: 250px;
    filter: grayscale(1);
    opacity: 0.7;
    transition: all ease-in-out 0.2s;
}

#partner img:hover {
    max-width: 250px;
    filter: grayscale(0);
    opacity: 1;
    transition: all ease-in-out 0.2s;
}

#partner_logos {
    display: flex;
    max-width: 900px;
    justify-content: space-between;
    align-items: center;
}

@media(max-width: 780px) {
    #partner_logos {
        display: grid;
        max-width: 900px;
        justify-content: space-between;
        align-items: center;
    }

    #partner img {
        max-width: 100%;
        padding: 20px 0px;
        filter: grayscale(1);
        opacity: 0.7;
        transition: all ease-in-out 0.2s;
    }

    #partner img:hover {
        max-width: 100%;
        padding: 20px 0px;
        filter: grayscale(0);
        opacity: 1;
        transition: all ease-in-out 0.2s;
    }
}

#kontakt {
    padding: 3.5vh 50px 3.5vh 50px;
    max-width: 900px;
    margin: 0 auto;
}

#impressum {
    padding: 3.5vh 50px 3.5vh 50px;
    max-width: 900px;
    margin: 0 auto;
}

.footer {
    color: #f2f2f2;
    padding: 20px;
    background: #18212b;
    text-align: center;
}

.footer a {
    text-decoration: none;
}

.imprint {
    max-width: 1600px;
    margin: 0 auto;
    padding: 50px;
    text-align: justify;
    align-items: center;
}

.notfound {
    max-width: 1600px;
    margin: 0 auto;
    padding: 50px;
    text-align: center;
    align-items: center;
}