:root{
    --primary-color: #8b1a1a;
    --secondary-color: #d50b0b;
    --background-color: #333;
    --text-color: #fff;
}
html,body{
    margin: 0;
    padding: 0;
    font-family: Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
}
body{
    font-size: 1rem;
    line-height: 1.4;
}
a{
    color: var(--primary-color);
    text-decoration: none;
    color: var(--text-color);
}
a:hover,a:focus{
    color: var(--secondary-color);
}
.button{
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: var(--text-color);
    border: none;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    text-transform: uppercase;
}
.button:hover,
.button:focus{
    background-color: var(--secondary-color);
    color: var(--text-color);
}
.container{
    width: 96%;
    margin: 0 auto;
}
.container--narrow{
    max-width: 960px;
}
#main{
    padding: 3rem 0;
    flex: 1;
}
#page-container {
    position: relative;
    width: 100%;
    min-height: 100vh;
    margin: 0 auto;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}
#flipbook-wrapper {
    flex: 1;
    position: relative;
}
#flipbook-container, #testcontainer {
    position:absolute;
    width:100%;
    height:100%;
}
#page-header{
    padding: 1rem 0;
    border-bottom: 1px solid var(--text-color);
}
#page-header h1,
#page-header a{
    margin: 0;
    font-size: 0.7rem;
    font-weight: normal;
}
#page-header h1{
    line-height: 1.1;
    text-transform: none;
}
#page-header .container{
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}
#page-footer {
    padding: 1rem;
    font-size: 0.7rem;
    background-color: #000;
    text-align: center;
}
#page-footer a{
    text-decoration: none;
    text-transform: uppercase;
}
#page-footer ul{
    margin: 0;
    padding: 0;
    list-style-type: none;
}
#page-footer li{
    display: inline-block;
    margin: 0 0.5rem;
}

@media only screen and (min-width: 640px){
    #page-header h1,
    #page-header a{
        font-size: 1rem;
    }
}

@media only screen and (min-width: 768px){
    #page-header h1,
    #page-header a{
        font-size: 1.2rem;
    }
}