html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #000;
    color: #fff;
    font-family: sans-serif;
}

* {
    box-sizing: border-box;
}

#sizeApp {
    position: fixed;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

.quarter {
    position: absolute;
    width: 50vw;
    height: 50vh;
    overflow: hidden;
}

.quarter-tl {
    left: 0;
    top: 0;
    background: #000;
}

.quarter-tr {
    left: 50vw;
    top: 0;
    background: url("1920x1080-vertical-lines.png");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center center
}

.quarter-bl {
    left: 0;
    top: 50vh;
    background: url("960x540-vertical-lines.png");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center center
}

.quarter-br {
    left: 50vw;
    top: 50vh;
    background: url("640x360-vertical-lines.png");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center center
}

.viewport-border {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    border: 0.55vh solid #fff;
    pointer-events: none;
    z-index: 10;
}

.midline {
    position: fixed;
    background: #fff;
    pointer-events: none;
    z-index: 8;
}

.midline.vertical {
    left: 50vw;
    top: 0;
    width: 0.25vw;
    height: 100vh;
    margin-left: -0.125vw;
}

.midline.horizontal {
    left: 0;
    top: 50vh;
    width: 100vw;
    height: 0.25vh;
    margin-top: -0.125vh;
}

.info-panel {
    padding: 0.8vh 0.7vw;
    background: #000;
    overflow: hidden;
}

.panel-heading {
    display: table;
    width: 100%;
    margin-bottom: 0.5vh;
}

.panel-heading h1 {
    display: table-cell;
    margin: 0;
    color: #fff;
    font-size: 2.2vh;
    line-height: 1.1;
    font-weight: 700;
    vertical-align: middle;
}

.connection-status {
    display: table-cell;
    width: 1%;
    padding-left: 0.7vw;
    color: #ffd166;
    font-size: 2vh;
    line-height: 1.2;
    text-align: right;
    text-transform: uppercase;
    vertical-align: middle;
    white-space: nowrap;
}

.connection-status.offline {
    color: #f00;
}

.info-list {
    margin: 0;
    padding: 0;
    font-size: 2.5vh;
    line-height: 1.05;
    overflow: hidden;
}

.info-row {
    display: table;
    width: 100%;
    padding: 0.2vh 0;
    border-top: 0.1vh solid #000;
}

.info-row:first-child {
    border-top: 0;
}

.info-row dt,
.info-row dd {
    display: table-cell;
    vertical-align: top;
}

.info-row dt {
    width: 39%;
    padding-right: 0.3vw;
    color: #9bd4ff;
    font-weight: 700;
}

.info-row dd {
    margin: 0;
    color: #ffffff;
    text-align: right;
    word-break: break-word;
}

.quarter-label {
    position: absolute;
    left: 0;
    top: 25vh;
    width: 50vw;
    color: #ffffff;
    font-size: 3vh;
    text-align: center;
    line-height: 1;
    font-weight: 700;
}

.fullscreen-button {
    position: absolute;
    left: 40vw;
    top: 45vh;
    width: 20vw;
    height: 10vh;
    margin: 0;
    padding: 0;
    border: 0.3vh solid #ffffff;
    background: #000;
    color: #ffffff;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 3vh;
    font-weight: 700;
    line-height: 1;
    text-align: center;
    cursor: pointer;
    z-index: 12;
}

.fullscreen-button:focus {
    outline: 0.4vh solid #ffd166;
}

.fullscreen-button:active {
    background: #000;
}