*{
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: #666;
}

.centro{
    width: 90%;
    margin: 0 5%;
}

.topo{
    width: 100%;
    margin-bottom: 40px;
}

.topo img{
    width: 100%;
    margin-bottom: 20px;
}

.box{
    width: 23%;
    float: left;
    margin-bottom: 40px;
    margin: 0 1%;
}

.box img{
    width: 100%;
    margin-bottom: 10px;
}

video{
    margin-bottom: 40px;
}

p{
    margin-bottom: 15px;
}

h2{
    font-size: 1.2em;
    margin-bottom: 15px;
}

.meio{
    width: 50%;
    float: left;
}

.meio img{
    width: 80%;
}


@media(max-width:800px) {

    .centro{
        width: 95%;
        margin: 10px 2.5%;
    } 

    .meio{
        width: 100%;
    }

    .topo{
        width: 100%;
        margin-bottom: 0px;
    }

    .box{
        width: 100%;
        margin-bottom: 15px;
    }

    .box img{
        width: 100%;
    }

    video{
        margin-bottom: 15px;
    }

    .meio img{
        width: 100%;
    }


}