* {
    -webkit-tap-highlight-color: rgba(0,0,0,0); /* make transparent link selection, adjust last value opacity 0 to 1.0 */
}

html, body {
    height: 100%;
    width: 100%;
}

body {
    -webkit-touch-callout: none;                /* prevent callout to copy image, etc when tap to hold */
    -webkit-text-size-adjust: none;             /* prevent webkit from resizing text to fit */
    -webkit-user-select: none;                  /* prevent copy paste; to allow, change 'none' to 'text' */
    user-select: none;

    background-color:#E4E4E4;
    background-image:linear-gradient(top, #A7A7A7 0%, #E4E4E4 51%);
    background-image:-webkit-linear-gradient(top, #A7A7A7 0%, #E4E4E4 51%);
    background-image:-ms-linear-gradient(top, #A7A7A7 0%, #E4E4E4 51%);
    background-image:-webkit-gradient(
            linear,
            left top,
            left bottom,
            color-stop(0, #A7A7A7),
            color-stop(0.51, #E4E4E4)
    );
    background-attachment:fixed;
    font-family:'HelveticaNeue-Light', 'HelveticaNeue', Helvetica, Arial, sans-serif;
    font-size:12px;
    text-transform:uppercase;
}

/* Portrait layout (default) */
.app {
    text-align:center;
    padding-top: 10%;
}

h1 {
    font-size:24px;
    font-weight:normal;
    margin:0px;
    overflow:visible;
    padding:0px;
    text-align:center;
}

.event {
    border-radius:4px;
    -webkit-border-radius:4px;
    color:#FFFFFF;
    font-size:12px;
    margin:0px 30px;
    padding:2px 0px;
}

.event.listening {
    background-color:#333333;
    display:block;
}

.event.received {
    background-color:#4B946A;
    display:none;
}

@keyframes fade {
    from { opacity: 1.0; }
    50% { opacity: 0.4; }
    to { opacity: 1.0; }
}

@-webkit-keyframes fade {
    from { opacity: 1.0; }
    50% { opacity: 0.4; }
    to { opacity: 1.0; }
}

.blink {
    animation:fade 3000ms infinite;
    -webkit-animation:fade 3000ms infinite;
}

.md-btn {
    font-family: sans-serif;
    font-size: 14px;
    display: inline-block;
    padding: 11px;
    text-align: center;
    border:0;
    border-radius: 5px;
    color:#000000;
    outline:0;
    width: 200px;
    backdrop-filter: blur(0.5px);
}

.md-btn:hover {
    cursor: pointer;
    background-color: #d4d3d5;
}

.md-btn-ripple:after {
    content: '';
    display: block;
    position: absolute;
    left: 50%;
    top: 50%;
    width: 80px;
    height: 30px;
    margin-left: -60px;
    margin-top: -60px;
    border-radius: 100%;
    transform: scale(0);
}