body, html {

    width: 100%;
    background-color: #404040;
    padding: 5px;
    box-sizing: border-box;
}

* {

    box-sizing: border-box;
    padding: 0;
    margin: 0;

}

p {

    padding: 5px 10px 5px 10px;


}

.device {

    width: 100%;
    margin: 0 auto;

}

.title {

    color: white;
    text-align: center;
    font-size: xxx-large;
    font-weight: bold;

}

.screen {

    width: 100%;
    background-color: antiquewhite;
    border-radius: 10px;
    font-size: xxx-large;
    height: 150px;

}

.panel {

    margin: 0 auto;
    width: 80%;
    font-size: 80px;
    border-radius: 25px;
    height: 150px;
    line-height: 140px;
    text-align: center;
    font-weight: bold;
    cursor: pointer;

}

.panelStart {

    background-color: lightgreen;
    color: black;

}

.panelStop {

    background-color: red;
    color: white;

}

.progBar {

    text-align: center;
    font-size: 100px;
    border-radius: 10px;
    background: transparent;
    z-index: 50;
    position: absolute;
    width: 100%;
    font-weight: bold;
    height: 150px;
    line-height: 150px;

}

.invisible {

    display: none; !important;

}

#redBar {

    background-color: red;
    float: left;
    width: 0;
    border-radius: 10px;
    height: 150px;
}

#greenBar {

    background-color: lightgreen;
    float: left;
    width: 100%;
    border-radius: 10px;
    height: 150px;
}