.myImg{
    position: absolute;
}
@media (min-width: 1px) and (max-width: 959px){
 .myImg{
    position: absolute;z-index:2;position:absolute;left:2.8125%;top:18.779342723%;max-width: 97.1875%;
 }	
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}
.in{
    animation: fadeIn 0.75s;
    /* 上面0.5是他漸入動作持續的秒數  */
    animation-fill-mode: forwards;
}
.out{
    animation: fadeOut 0.75s;
    /* 漸出動作持續的秒數  */
    animation-fill-mode: forwards;
}