*{
	margin: 0;
	padding: 0;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}
#about .contenedor{
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    padding-top: 50px;
    padding-bottom: 50px;
    margin-top: 20px;
    height: 880px;
    background-color: rgb(237,237,237);
}

#about iframe{
    width: 600px;
    height: 450px;
    border: 0px;
}

#about article{
    width: 100%;
    max-width: 600px;
}

@media screen and (max-width: 1000px){
    #about .contenedor{
        margin-left: 0px;
        margin-right: 0px;
    }
    #about article{
        width: 100%;
        max-width: 500px;
    }
    #about iframe{
        width: 500px;
        height: 350px;
        border: 0px;
    }
}
@media screen and (max-width: 599px){
    #about .contenedor{
        margin-left: 20px;
        margin-right: 20px;
    }
    #about article{
        max-width: 500px;
    }
    #about iframe{
        width: 420px;
        height: 250px;
        border: 0px;

    }
}
@media screen and (max-width: 490px){
    #about .contenedor{
        margin-left: 10px;
        margin-right: 10px;
    }
    #about article{
        max-width: 400px;
    }
    #about iframe{
        width: 350px;
        height: 250px;
        border: 0px;

    }
}
@media screen and (max-width: 400px){
    #about .contenedor{
        margin-left: 10px;
        margin-right: 10px;
    }
    #about article{
        max-width: 300px;
    }
    #about iframe{
        width: 305px;
        height: 250px;
        border: 0px;

    }
}
@media screen and (max-width: 399px){
    #about iframe{
        width: 285px;
        height: 250px;
        border: 0px;

    }
}