.alfaFlecha  {
width:30px; height: 30px; border-radius: 100px; position: absolute;
cursor: pointer; background-color: #1A1E40; color:#FFF; border: none;
opacity: .5; top: 50%; transform: translateY(-50%);
z-index: 9; text-align: center;
}
.alfaFlecha:hover{ opacity: 1;}
.alfaFlechaL { left: 0; }
.alfaFlechaL::before{
    content: 'navigate_before';
   font-family: 'Material Icons';;
   left: 50%;
   position: absolute;
   top: 50%;
   transform: translate(-50%,-50%);
}
.alfaFlechaR { right: 0;}
.alfaFlechaR::before{
    content: 'navigate_next';
   font-family: 'Material Icons';;
   left: 50%;
   position: absolute;
   top: 50%;
   transform: translate(-50%,-50%);
}


.alfaVideoPlay {
    left:50px; top:50%; width:80px; height:80px; transform:translateY(-50%);  z-index:5;
    cursor: pointer;
}