body {
    margin: 0px;
    --uapp-border: #dadada;
    --uapp-bgtablerow1: #f0f0f0;
    --uapp-bgtablerow2: #fefefe;
    --appbgbtn1: #eaeaea;
    --appfgbtn1: #333333;
    --apphgbtn1: #aaaaaa;
    font-family: 'Arial',sans-serif;
}
#app {
    display: flex;
    justify-content: center;
}