.cajaenteranueva {
  height: 150px;
  width: 300px;
  background-image: url(http://i.imgur.com/Okj9wuv.png);
  opacity: 0;
  transition-duration: .6s;
  position: absolute;
  top: 0px;
}

.cajaenteranueva:hover {
  opacity: .8;
}

.transicionr {
  border: 10px solid #fff;
  height: 150px;
  outline: 1px solid #e5e5e5;
  width: 300px;
  transition-duration: .6s;
  position: relative;
margin: 0 auto;
}

.letras1 {
  text-align: center;
  margin-right: 20px;
  margin-top: 50px;
  font-family: geneva;
  font-size: 11px;
  background: #fff;
  opacity: 0.55;
  color: #000;
  padding: 10px;
  font-style: italic;
  border: 1px solid #e5e5e5;
  padding: 5px;
  width: 80px;
  right: 1px;
  position: absolute;
line-height: 130%;
}

.letras2 {
  text-align: center;
  margin-left: 20px;
  margin-top: 50px;
  font-family: geneva;
line-height: 130%;
  font-size: 11px;
  background: #fff;
  opacity: 0.55;
  color: #000;
  padding: 10px;
  font-style: italic;
  border: 1px solid #e5e5e5;
  padding: 5px;
  width: 80px;
  left: 1px;
  position: absolute;
}