body {
    padding-top: 90px;
}

.drop {
    border: 2px dashed #bbb;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    border-radius: 5px;
    padding: 25px;
    text-align: center;
    color: #bbb;
}

.drop.is-dragover {
  background-color: #bbb;
}

.drop.is-dragover * {
    pointer-events: none;
}

.document-view h2 {
    text-align: center;
}

.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;
}