:root {
    --dark: #4f6909;
    --light: #f4e872;
    --fg: #f4e872;
    --bg: beige;
}

* {
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
}

body {
    background-color: white;
    padding: 0;
    margin: 0;
    border: 0;
    width: 100%;
    font-size: 150%;
}

main {
    clear: both;
    box-sizing: border-box;
    padding: 2rem;
}
@media only screen and (min-width: 1200px) {
  main {
        width: 70%;
        padding: 1rem 0 3rem 4rem;
        max-width: 1000px;
        margin-left: auto;
        margin-right: auto;
  }
}

footer {
    clear: both;
    text-align: center;
    padding: 2rem 5rem;
    border-top: 10px solid var(--dark);
    border-radius: 2rem;
}

h1, h2, .annoncement, .buy, .book {
    text-align: center;
}
h1 {
    padding: 0;
    margin-bottom: 0.2em;
    font-size: 250%;
    font-weight: 800;
}
h2 {
    color: rgba(0, 0, 0, 0.6);
    margin-top: 0.2em;
}
h2, h3 {
    font-size: 150%;
}
h3 {
    margin-bottom: 0;
}

input, button {
    font-size: 100%;
}
input {
    padding: 0.2rem 0.5rem;
}
button {
    border: 0;
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--light);
}

.annoncement {
    font-weight: bold;
    color: var(--dark);
    padding: 0.5em;
    font-style: italic;
}
.buy a {
    text-decoration: none;
    color: var(--dark);
    background-color: var(--bg);
    border-radius: 1em;
    padding: 0.5em;
}
.buy a {
    display: inline-block;
    padding: 0.2em 0.7em;
    margin-top: 0.3em;
    font-size: 200%;
}
.buy a:hover {
    background-color: var(--light);
}

.book img {
    width: 50%;
    border: 1px solid gray;
    border-radius: 3px;
}
@media only screen and (min-width: 1200px) { 
    .book img {
        width: 10em;
    }
    .book {
        box-sizing: border-box;
        width: 50%;
        text-align: right;
    }
    .buy {
        box-sizing: border-box;
        width: 48%;
        float: right;
        padding-right: 5em;
    }
    .buy a {
        font-size: 100%;
        padding: 0.2em 1em;
    }        
    .buy span {
        display: block;
        margin: 1em;
    }
}

.teaser, .toc {
    background-color: #efefef;
    color: #666;
}
.teaser {
    border-radius: 2rem;
    padding: 2rem 5rem;
    margin: 3rem 0;
}

.toc {    
    clear: both;
    box-sizing: border-box;
    margin-bottom: 10rem;
    padding: 2rem 0;
}
.toc h3, .toc > ul {
    box-sizing: border-box;
    margin: 2rem;
}
.toc li {
    margin-top: 0.5em;
    margin-bottom: 0.5em;
    font-weight: bold;
}
.toc li ul > li {
    font-style: italic;    
    font-weight: normal;
}
.toc > ul {
    padding-left: 6rem;
}
@media only screen and (min-width: 1200px) {
  .toc h3, .toc > ul {
        width: 70%;
        max-width: 1000px;
        margin-left: auto;
        margin-right: auto;
        padding: 0 4rem;
  }
  .toc > ul {
      padding-left: 8rem;
  }
  .toc {
        padding: 2rem 0;
  }
}