#cabecera {
  border-style: none;
  width: 100%;
  height: 80px;
  background-position:  center center;
  background-repeat: no-repeat;
  position: absolute;
  background-image: url(../imagenes/logos/logo.png);
  background-color: #333333;
  top: 0px;
  left: 0px;
}
#cepillo {
  background-image: url(../imagenes/cepillo.png);
  background-position:  center center;
  background-repeat: no-repeat;
  text-align: center;
  width: 75px;
  height: 65px;
  z-index: 10;
  position: static;
  margin-left: 10%;
  float: left;
}
#centro {
  border-style: none;
  margin-top: 90px;
  margin-left: 10%;
  width: 80%;
}
#inferior {
  border-style: none;
  width: 80%;
  margin-left: 10%;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  margin-top: 30px;
  position: relative;
}