html {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    user-select: none;
}

*, *::before, *::after {
    -webkit-box-sizing: inherit;
    box-sizing: inherit;
}

body {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    height: 100vh;
    width: -webkit-fit-content;
    width: -moz-fit-content;
    width: fit-content;
    margin: 0 auto;
    padding: 1em .5em;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    font-weight: 400;
    color: #FFF;
}

main {
    height: auto;
    position: relative;
    min-width: 50ch;
    max-width: 35vw;
    padding: 1em;
    border-radius: .25em;
    font-size: 1em;
    line-height: 1.25;
    background-color: rgba(0, 0, 0, 0.5);
}

    main a#close {
        position: absolute;
        right: 1em;
        top: 1em;
        height: 1em;
        width: 1em;
        opacity: 0.25;
    }

        main a#close:hover {
            opacity: 1;
        }

        main a#close:before, main a#close:after {
            content: ' ';
            position: absolute;
            left: .5em;
            height: 1em;
            width: 2px;
            background-color: #FFF;
            border-radius: 1px;
        }

        main a#close:before {
            -webkit-transform: rotate(45deg);
            transform: rotate(45deg);
        }

        main a#close:after {
            -webkit-transform: rotate(-45deg);
            transform: rotate(-45deg);
        }

    main h1, main p {
        margin: 0;
    }

    main h1 {
        font-size: 1.5em;
        line-height: 1;
        margin-bottom: .125em;
        padding-right: 1em;
        text-overflow: ellipsis;
        white-space: nowrap;
        overflow: hidden;
    }

    main p {
        margin-bottom: 1em;
        line-height: 1.125;
    }

    main .form {
        margin-top: .25em;
    }

        main .form input {
            width: 100%;
            padding: .5em;
            font-family: "Roboto Mono";
            font-weight: 500;
            font-size: 1em;
            border: none;
            border-radius: 5px;
            background-color: rgba(0, 0, 0, 0.125);
            color: inherit;
        }

            main .form input:focus {
                outline-width: 0;
            }