body {
  height: 100%;
  overflow: hidden;
  width: 100% !important;
  box-sizing: border-box;
  font-family: 'Roboto', sans-serif;
}

@media only screen and (max-width: 768px) {
  /* For mobile phones: */
  .backLeft2 {
    width: 0%;
  }

  .backLeft {
    width: 0%;
  }
  #slideBox {
    width: 100%;
    height: 100vh;
    margin-left: 0%;
  }  
  .content {
    width: 100%;
    margin: 0 auto;
    top: 10%;
    position: absolute;
    padding: 20px;
    left: 0;
    margin-left: 0px;
  }
  button{
      width: 100%;
  }
}

@media only screen and (min-width: 768px) {
  /* For desktop: */
  .backLeft {
    width: 70%;    
  }
  .backLeft2 {
    width: 70%;
  }
  #slideBox {
    width: 30%;
    height: 100%;
    margin-left: 70%;
  }  
  .content {
    width: 300px;
    margin: 0 auto;
    top: 20%;
    position: absolute;
    left: 45%;
    margin-left: -125px;
  }
}

.backLeft {
  position: absolute;
  left: 0;
  height: 100%;
  background: #e74c3c url(../../../sigag/portal/bg.jpg);
  background-size: cover;
  background-position: 50% 50%;
}
.backLeft2 {
  position: absolute;
  left: 0;
  height: 100%;
  background: #e74c3c url(../../../sigag/portal/321/Imagen_Ingreso_Luker.jpeg);
  background-size: cover;
  background-position: 50% 50%;
}

#back {
  width: 100%;
  height: 100%;
  position: absolute;
  z-index: -999;
}
#slideBox {
  max-height: 100%;
  overflow: hidden;
  position: absolute;
  box-shadow: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
}
.topLayer {
  width: 200%;
  height: 100%;
  position: relative;
  left: 0;
  left: -100%;
}

.left {
  width: 50%;
  height: 100%;
  background: #2C3034;
  left: 0;
  position: absolute;
}

.right {
  width: 50%;
  height: 100%;
  background: #f9f9f9;
  right: 0;
  position: absolute;
}

.content h2 {
  color: #26a69a;
  font-weight: 300;
  font-size: 35px;
  text-align: center;
}


.off {
  background: none;
  color: #03A9F4;
  box-shadow: none;
}

.right .off:hover {
  background: #eee;
  color: #03A9F4;
  box-shadow: none;
}
.left .off:hover {
  box-shadow: none;
  color: #03A9F4;
  background: #363A3D;
}