html {
    color: rgba(0, 0, 0, 0.87);
    font-family: "Roboto",sans-serif;
    font-weight: normal;
    line-height: 1.5;
}
nav .brand-logo {
	height: 100%;
}
nav .brand-logo img {
	height: 100%;
}

.fixed-action-btn.previous, 
.fixed-action-btn.next {
	top: 50%;
}
.fixed-action-btn.previous .btn-floating, 
.fixed-action-btn.next .btn-floating {
	opacity: .7;
}
.fixed-action-btn.previous .btn-floating:hover, 
.fixed-action-btn.next .btn-floating:hover {
	opacity: 1;
}
.fixed-action-btn.previous {
	left: 50px;
	right: auto;
}
.fixed-action-btn.next {
	left: auto;
	right: 50px;
}