/* BASIC css start */
.on {
position:absolute;
left:0;
opacity:0;
transition:opacity 0.4s ease;
}

a:hover .on {
opacity:1;
}



.on2 {
position:absolute;
left:570px;
opacity:0;
transition:opacity 0.4s ease;
}

a:hover .on2 {
opacity:1;
}

.font_size {font-size:0;}
/* BASIC css end */