style.css

body {
    font-family: 'Quicksand';
    width: auto;
    margin: 0 auto;
    max-width: 100%;
    line-height: 150%;
    position: relative;
    min-height: 100vh;
}

#page-container {
    position: relative;
    min-height: 100vh;
}

header {
    background: #C4E6B1;
    margin: 0 auto;
    max-width: 100%;
    height: 120px;
    display: flex;
    align-items: center;
}

footer {
    background: #C4E6B1;
    width: 100%;
    height: 120px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: absolute;
    bottom: 0;
}

header>div {
    position: absolute;
    width: 100%;
    /* pointer-events: none; */
}

h1 {
    font-family: 'Quicksand';
    color: #2A2D2A;
    font-size: 1.8em;
    font-weight: bold;
}

h1.title {
    margin: 0 auto;
    text-align: left;
    line-height: 150%;
    max-width: 1024px;
    padding: 0 4vw;
    pointer-events: none;
}

@media (max-width: 850px) {
    h1.title {
        font-size: 1.6em;
        margin-bottom: 20px;    
    }
}

@media (max-width: 460px) {
    nav>a {
        display: none;
    }
    h4.implantat {
        font-size: 1.2em;
    }    
}

@media (min-width: 460px) {
    .openbtn {
        display: none;
    }
}

h2 {
    font-family: 'Roboto Slab';
    color: #2A2D2A;
    font-size: 1.4em;
    font-weight: bold;
    line-height: normal;
}

h2.title {
    font-family: 'Quicksand';
}

h3 {
    color: #2A2D2A;
    font-size: 20px;
    font-weight: bold;
}

h4 {
    color: #047100;
    font-size: 1.3em;
    font-weight: bold;
    background-color: #ffffff90;
    padding-bottom: 10px;
    line-height: normal;
}

h4.implantat {
    margin: 10px 10px 10px 10px;
    padding: 10px;
}

h5 {
    color: #047100;
    font-size: 20px;
    font-weight: bold;
}

p {
    color: #2A2D2A;
    font-size: 1em;
    font-weight: normal;
}

p.reinigung {
    width: auto;
    justify-content: space-evenly;
    margin: 40px;
}

#green {
    color: #047100;
    font-size: 16px;
    font-weight: bold;
}

p.kontakt {
    margin-top: 0px;
    line-height: normal;
    max-width: 100%;
}

footer p {
    color: #2A2D2A;
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    margin: 0 auto;
    max-width: 100%;
}

.white {
    background: #ffffff80;
    max-width: 1024px;
    margin: 40px auto 0 auto;
    padding: 0 4vw 120px 4vw;
    backdrop-filter: blur(5px);
}

.white>div {
    display: flex;
    align-items: center;
    margin: 30px 0;
    max-width: 100%;
}

.leistungen-karte>div {
    padding: 20px;
}

.body {
    background: url("assets/hintergrund.jpg");
    background-size: auto;
    background-size: cover;
}

.menu {
    justify-content: flex-end;
    display: flex;
    height: 120px;
    margin-left: auto;
    margin-top: 100px;
}

.termin {
    justify-content: space-between;
}

.termin>div {
    max-width: 500px;
}

@media (max-width: 1000px) {
    .align-left>div {
        align-items: flex-start;
    }
}

nav {
    float: right;
    margin-left: auto;
    margin-top: auto;
    display: flex;
}

a {
    color: #2A2D2A;
    font-weight: bold;
    font-size: 16px;
    text-decoration: none;
    background-color: #ffffff90;
    padding-top: 5px;
    padding-right: 10px;
    padding-left: 10px;
    padding-bottom: 5px;
}

a:hover {
    background-color: #C4E6B1;
    color: #047100;
}

@media (max-width: 1000px) {
    .white>div {
        flex-direction: column-reverse;
    }
    img {
        width: 80%;
        max-width: 512px;
    }
    .leistungen-karte img {
        margin-bottom: 32px;
    }
}

figure {
    position: relative;
}

figure img {
    height: auto;
    width: 50%;
}

figcaption {
    padding: 10px;
    text-align: left;
    position: absolute;
    bottom: 0;
    width: 100%;
    color: #2A2D2A;
    background-color: #ffffff90;
}

button {
    color: #2A2D2A;
    font-family: 'Roboto Slab';
    font-size: 20px;
    font-weight: bold;
    background-color: #ffffff90;
    padding: 10px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    cursor: pointer;
    border: none;
    margin: 0px auto;
    transition: all 0.3s cubic-bezier(.25, .8, .25, 1);
}

button:hover {
    background-color: #C4E6B1;
    color: #2A2D2A;
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.25), 0 10px 10px rgba(0, 0, 0, 0.22);
}

button:active {
    background-color: #C4E6B1;
    color: #2A2D2A;
    box-shadow: 0px 5px 10px 5px #2A2D2A;
    transform: translateY(4px);
}

.zahnreinigung {
    justify-content: space-evenly;
}

.zahnreinigung>* {
    flex: 1 0;
}

/* Bilder */

#team {
    width: 50%;
    height: auto;
}

@media (max-width: 1000px) {
    #team {
        min-width: 100%;
    }
}

.sidebar {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;
    top: 0;
    right: 0;
    background-color: #C4E6B1;
    overflow-x: hidden;
    transition: 0.5s;
    padding-top: 60px;
}

.sidebar a {
    padding: 16px 8px;
    font-size: 20px;
    color: #2A2D2A;
    background-color: #ffffff90;
    display: block;
    transition: 0.3s;
}

.sidebar a:hover {
    color: #C4E6B1;
}

.sidebar .closebtn {
    position: absolute;
    top: 0;
    left: 25px;
    font-size: 36px;
    margin-right: 50px;
}

.openbtn {
    font-size: 20px;
    cursor: pointer;
    background-color: #ffffff90;
    color: #2A2D2A;
    padding: 10px 15px;
    border: none;
    position: absolute;
    right: 0;
}

.openbtn:hover {
    background-color: #C4E6B1;
}

#main {
    transition: margin-left .5s;
    padding: 16px;
}

/* On smaller screens, where height is less than 450px, change the style of the sidenav (less padding and a smaller font size) */

@media screen and (max-height: 450px) {
    .sidebar {
        padding-top: 15px;
    }
    .sidebar a {
        font-size: 18px;
    }
}