.appmask {
    width: 40%;
    margin-left: 20%;
}
.text-align-center{
text-align:center;
}
.rap .mT40{
    margin-top: 120px;
}
@media screen and (max-width: 750px){
    .download-exe-page{
        display: block;
        height: 1050px;
   }
    .appmask {
         width: 100%;
    }
    .rap .mT40{
    margin-top: 20px;
    }
}