body{
    background-color: gray;
}

#titulo{
    text-align: center;
    color: black;
    margin-left: 80px;
    margin-right: 170px;
    padding: 5px;
    font-size: 40px;
}

#video1{
    margin-left: 450px;
}

#video2{
    margin-left: 350px;
}

#camara1{
    margin-left: 410px;
    margin-top: 10px;
    border-radius: 10px;
    background-color: white;
    border: 3px solid black;
    font-size: 80%;
}

#camara2{
    margin-left: 120px;
    margin-top: 10px;
    border-radius: 10px;
    background-color: white;
    border: 3px solid black;
    font-size: 80%;
}

#camara3{
    margin-left: 120px;
    margin-top: 10px;
    border-radius: 10px;
    background-color: white;
    border: 3px solid black;
    font-size: 80%;
}

#btn_src_on{
    margin-left: 420px;
    margin-top: 10px;
    border-radius: 10px;
    background-color: white;
    border: 3px solid black;
    font-size: 80%;
}

#btn_src_off{
    margin-left: 130px;
    margin-top: 10px;
    border-radius: 10px;
    background-color: white;
    border: 3px solid black;
    font-size: 80%;
}

#btn_src_test{
    margin-left: 140px;
    border-radius: 10px;
    background-color: white;
    border: 3px solid black;
    font-size: 80%;
}