html, body {
    margin: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", Frutiger, "Frutiger Linotype", "Dejavu Sans", "Helvetica Neue", Arial, sans-serif;
    
    background-color: #e3e3e3;
}