html {
    box-sizing: border-box;
    line-height: 1.5;
    text-size-adjust: 100%;
}

* {
    box-sizing: inherit;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    background-color: #fafafa;
}

h1 {
    text-align: center;
    margin: 150px auto 30px auto;
}

main {
    margin: auto;

    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    grid-template-rows: auto;
    grid-gap: 1rem;
    padding: 1rem;
}

style[contenteditable="true"] {
    white-space: pre-line;
    display: block;
}