body {font-size: 200%;
    background-color: rgb(39, 196, 193);}

h1 {text-align: center;
    font-size: 100%;}

li {margin: 1%;}

.aviEmb {float: right;
        width: 25%;
        height: 30%;
        margin-left: 10px;
        margin-right: 10px;
        margin-top: 1%;}

audio, video { display: block; 
                width: 640px; 
                max-width: 90%; 
                margin: 0 auto;}

video {margin-bottom: 5%;}

.iniem {background-color: rgb(80, 127, 150);}

.ejts {background-color: rgb(80, 150, 85);}

.ejte2 {background-color: rgb(150, 80, 121);}

.ejitr {background-color: rgb(150, 117, 80);}

.errj {background-color: rgb(212, 77, 19);}

.regresar {position: fixed; top: 0%; left: 0%;
            width: 3%;
            height: auto;
            margin: 0.5%;}

.flotante {position: fixed; top: 0%; right: 0%;
            width: 3%;
            height: auto;
            margin: 0.5%;}

.flechaboeing {position: fixed; bottom: 0%; right: 0%;
            width: 3%;
            height: auto;
            margin: 0.5%;} 

.flechaairbus {position: fixed; bottom: 8%; right: 0%;
            width: 3%;
            height: auto;
            margin: 0.5%;} 

.fuentes {position: fixed; bottom: 0%; left: 0%;
            width: 3%;
            height: auto;
            margin: 0.5%;}