carto-interco/css/bootstrap-complement.css

.btn-file {
	position: relative;
	overflow: hidden;
}
.btn-file input[type=file] {
	position: absolute;
	top: 0;
	right: 0;
	min-width: 100%;
	min-height: 100%;
	font-size: 100px;
	text-align: right;
	filter: alpha(opacity=0);
	opacity: 0;
	outline: none;
	background: white;
	cursor: inherit;
	display: block;
}
.panel-body pre {
	overflow: auto;
	white-space: pre-wrap;
	word-break: keep-all;
}