.logo {
	margin-top: 20px;
    width: 20%;
}
.font {
    font-size: 1.5em;
}
.button {
    display      : inline-block;
    width: 85%;
}
.open {
    background-image:url('/img/open.png');
}
.download {
    background-image:url('/img/download.png');
}
 
.btn:hover {
 opacity: 0.7;
}