Silly-Home/Packages/com.vrchat.base/Editor/VRCSDK/Resources/VRCSDKSettingsStyle.uss

#container {
    margin: 2px 10px;
}

#title-label {
    -unity-font-style: bold;
    font-size: 18px;
    margin-bottom: 10px;
}

#settings-button {
    padding: 0;
    margin: 0;
}