body {
background-color: #ffffff;
color: #000000
}

img { 
border: 0; 
}

.header {
clear: both;
text-align: center; 
}

#title {
font-size: 1.5em;
}

#subtitle {
font-size: 1.2em;
}

#author {
font-size: 1.2em;
}

.presented {
border-style: dotted;
margin-left: auto;
margin-right: auto;
display: table;
text-align: center; 
}

.abstract {
clear: both;
text-align: justify; 
width: 70%;
margin-left: auto;
margin-right: auto;
}

.copyright {
clear: both;
text-align: center; 
font-size: .9em;
}