.unknown-file {
    color:            white;
    font-size:        1em;
    background-color: rgb(69, 69, 69);
    margin:           auto;
    padding:          10px;
    width:            300px;
    height:           100px;
}

.unknown-file .download-button {
    -moz-box-shadow:       inset 0px 1px 0px 0px #54a3f7;
    -webkit-box-shadow:    inset 0px 1px 0px 0px #54a3f7;
    box-shadow:            inset 0px 1px 0px 0px #54a3f7;
    background:            -webkit-gradient(linear, left top, left bottom, color-stop(0.05, #007dc1), color-stop(1, #0061a7));
    background:            -moz-linear-gradient(top, #007dc1 5%, #0061a7 100%);
    background:            -webkit-linear-gradient(top, #007dc1 5%, #0061a7 100%);
    background:            -o-linear-gradient(top, #007dc1 5%, #0061a7 100%);
    background:            -ms-linear-gradient(top, #007dc1 5%, #0061a7 100%);
    background:            linear-gradient(to bottom, #007dc1 5%, #0061a7 100%);
    filter:                progid:DXImageTransform.Microsoft.gradient(startColorstr='#007dc1', endColorstr='#0061a7', GradientType=0);
    background-color:      #007dc1;
    -moz-border-radius:    3px;
    -webkit-border-radius: 3px;
    border-radius:         3px;
    border:                1px solid #124d77;
    display:               inline-block;
    cursor:                pointer;
    color:                 #ffffff;
    font-family:           Arial;
    font-size:             13px;
    padding:               6px 24px;
    text-decoration:       none;
    text-shadow:           0px 1px 0px #154682;
}

.unknown-file .download-button:hover {
    background:       -webkit-gradient(linear, left top, left bottom, color-stop(0.05, #0061a7), color-stop(1, #007dc1));
    background:       -moz-linear-gradient(top, #0061a7 5%, #007dc1 100%);
    background:       -webkit-linear-gradient(top, #0061a7 5%, #007dc1 100%);
    background:       -o-linear-gradient(top, #0061a7 5%, #007dc1 100%);
    background:       -ms-linear-gradient(top, #0061a7 5%, #007dc1 100%);
    background:       linear-gradient(to bottom, #0061a7 5%, #007dc1 100%);
    filter:           progid:DXImageTransform.Microsoft.gradient(startColorstr='#0061a7', endColorstr='#007dc1', GradientType=0);
    background-color: #0061a7;
}

.unknown-file .download-button:active {
    position: relative;
    top:      1px;
}

.unknown-file .download-button:before {
    display: inline-block;
    content: url(images/toolbarButton-download.png);
}