gamepad-viewer/css/main.css

body {
    background: transparent;
    font-family: sans-serif;
    height: 100vh;
    overflow: hidden;
}

#unsupported {
    display: none;
    text-align: center;
    width: 100vw;
    margin: 60px 0;
}

body.unsupported #unsupported {
    display: block;
}

body.unsupported #instructions,
body.unsupported #gamepad {
    display: none;
}

#instructions {
    height: 100vh;
    line-height: 2em;
    text-align: center;
    width: 100vw;
}

@keyframes press-button {
    0% {
        fill: #898989;
    }

    7% {
        fill: #898989;
    }

    10% {
        fill: #00e530;
    }

    17% {
        fill: #00e530;
    }

    20% {
        fill: #898989;
    }

    27% {
        fill: #898989;
    }

    30% {
        fill: #00e530;
    }

    37% {
        fill: #00e530;
    }

    40% {
        fill: #898989;
    }

    100% {
        fill: #898989;
    }
}

#instructions svg {
    height: 90%;
    left: 50%;
    max-width: 600px;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
}

#instructions #a-button path {
    animation: press-button 5s linear infinite;
}

#gamepad {
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
    left: 50%;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
}

#help-popout {
    background: whitesmoke;
    border: 1px solid rgba(0, 0, 0, 0.2);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    box-sizing: border-box;
    color: black;
    display: none;
    font-size: 0.9em;
    left: 50%;
    min-width: 400px;
    width: 600px;
    max-height: 100vh;
    overflow-y: auto;
    padding: 20px;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
}

#help-popout.active {
    display: block;
}

#help-popout h2 {
    margin-bottom: 1.5em;
    margin-top: 0;
}

#help-popout h3 {
    margin-top: 1.5em;
}

#help-popout p:last-child {
    margin-bottom: 0;
}

#help-popout table {
    border-collapse: collapse;
    border-spacing: 0;
    max-width: 100%;
    width: 100%;
}

#help-popout th {
    text-align: left;
}

#help-popout th,
#help-popout td {
    border-top: 1px solid #ddd;
    line-height: 1.42857143;
    padding: 8px;
    vertical-align: top;
}

#help-popout table>thead>tr>th {
    border-bottom: 2px solid #ddd;
    border-top: 0;
    vertical-align: bottom;
}

kbd {
    -moz-border-radius: .3em;
    -moz-user-select: none;
    -webkit-border-radius: .3em;
    -webkit-user-select: none;
    border-radius: .3em;
    border: none;
    cursor: default;
    display: inline-block;
    display: inline;
    font: normal 1em monospace;
    margin: 0 .2em;
    min-width: 1em;
    padding: .2em .6em;
    text-align: center;
    text-decoration: none;
    font-weight: bold;
    font-size: 13px;
    user-select: none;
}

kbd[title],
.key[title] {
    cursor: help;
}

kbd,
kbd.dark {
    -moz-box-shadow: inset 0 0 1px rgb(150, 150, 150), inset 0 -.05em .4em rgb(80, 80, 80), 0 .1em 0 rgb(30, 30, 30), 0 .1em .1em rgba(0, 0, 0, .3);
    -webkit-box-shadow: inset 0 0 1px rgb(150, 150, 150), inset 0 -.05em .4em rgb(80, 80, 80), 0 .1em 0 rgb(30, 30, 30), 0 .1em .1em rgba(0, 0, 0, .3);
    background: -moz-linear-gradient(top, rgb(60, 60, 60), rgb(80, 80, 80));
    background: -webkit-gradient(linear, left top, left bottom, from(rgb(60, 60, 60)), to(rgb(80, 80, 80)));
    background: rgb(80, 80, 80);
    box-shadow: inset 0 0 1px rgb(150, 150, 150), inset 0 -.05em .4em rgb(80, 80, 80), 0 .1em 0 rgb(30, 30, 30), 0 .1em .1em rgba(0, 0, 0, .3);
    color: rgb(250, 250, 250);
    text-shadow: -1px -1px 0 rgb(70, 70, 70);
}

kbd.light {
    -moz-box-shadow: inset 0 0 1px rgb(255, 255, 255), inset 0 0 .4em rgb(200, 200, 200), 0 .1em 0 rgb(130, 130, 130), 0 .11em 0 rgba(0, 0, 0, .4), 0 .1em .11em rgba(0, 0, 0, .9);
    -webkit-box-shadow: inset 0 0 1px rgb(255, 255, 255), inset 0 0 .4em rgb(200, 200, 200), 0 .1em 0 rgb(130, 130, 130), 0 .11em 0 rgba(0, 0, 0, .4), 0 .1em .11em rgba(0, 0, 0, .9);
    background: -moz-linear-gradient(top, rgb(210, 210, 210), rgb(255, 255, 255));
    background: -webkit-gradient(linear, left top, left bottom, from(rgb(210, 210, 210)), to(rgb(255, 255, 255)));
    background: rgb(250, 250, 250);
    box-shadow: inset 0 0 1px rgb(255, 255, 255), inset 0 0 .4em rgb(200, 200, 200), 0 .1em 0 rgb(130, 130, 130), 0 .11em 0 rgba(0, 0, 0, .4), 0 .1em .11em rgba(0, 0, 0, .9);
    color: rgb(50, 50, 50);
    text-shadow: 0 0 2px rgb(255, 255, 255);
}