settings_panel.css

.settingsbg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
    text-align: center;
    z-index: 2000;
    vertical-align: middle;
    font-size: 16px;
}

.settingsbuttonbg {
    position: fixed;
    right: 0;
    bottom: 0;
    display: inline-block;
    z-index: 1000;
    padding: 5px;
    font-size: 16px;
}

.settingsbuttonbg button {
    font-family: sans-serif;
    font-size: 80%;
}

.settingsbox {
    z-index: 2010;
    vertical-align: middle;
    text-align: center;
    margin: 20px;
    border: 2px solid black;
    border-radius: 10px;
    background: #404040;
    background: linear-gradient(to bottom, #b4b4b4 0%, #909090 1%, #707070 3%, #606060 4%, #505050 6%, #202020 94%, #101010 96%, #000000 100%); 
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.innersettingsbox {
    background-color: LightGrey;
    color: black;
    padding: 6px;
    text-align: left;
    font-family: sans-serif;
    overflow: auto;
    border-radius: 5px;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 10px;
}

.innersettingsbox button {
    margin-top: 1ex;
    margin-bottom: 3ex;
    margin-right: 0.5em;
}

.innersettingsbox .idiv {
    margin-right: 1em;
    display: inline-block;
    white-space: nowrap;
    margin-bottom: 1ex;
}
.innersettingsbox label {
    margin-left: 0.5em;
    margin-right: 2em;
}
.innersettingsbox fieldset {
    margin-bottom: 2ex;
}

.innersettingsbox input[type="number"] {
    width: 3.5em;
}

@media print {
    .settingsbg, .settingsbuttonbg {
        display: none !important;
    }
}