a.control_prev,
a.control_next {
  position: absolute;
  top: 35px;
  z-index: 999;
  display: block;
  width: 30px;
  height: 30px;
  background: #2a2a2a;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 20px;
  opacity: 0.6;
  cursor: pointer;
  text-align: center;
}

a.control_prev:hover,
a.control_next:hover {
  opacity: 1;
  -webkit-transition: all 0.2s ease;
  color: white;

}

a.control_prev {
  border-radius: 15px;
  left: 2px;
}

a.control_next {
  right: 2px;
  border-radius: 15px;
}
.tabs-header {
  background: #ced4da;
}
.tabs-header .block-simple-ad-block {
  background: #ced4da;
  text-align: center;
}
.marcador .block-simple-ad-block {
  background: #ced4da;
}
#block-marcador .tabs-outer {
  height: 41px;
}
#block-marcador .tabs-outer .nav-tabs {
  position: absolute;
}