chrome-extensions-samples/api-samples/omnibox/simple-example/logs.css

html,
body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    font-size: 14px;
    margin: 0;
    padding: 0;
}

* {
    box-sizing: border-box;
}

body {
    padding: 10px;
    height: 100vh;
}

h1 {
    margin: 0;
    padding: 0;
}

#logs {
    max-height: calc(100vh - 100px);
    font-size: 1.2rem;
    position: fixed;
    bottom: 10px;
    left: 10px;
    right: 10px;
    overflow: auto;
}