html body{
    width: 100%;
    height: 100%;
    overflow-x: hidden;
}

.main{
    width: 100vw;
    height: 100%;
    position: relative;
   
}
.bannerAbout{
    position: relative;
    /* padding-top: 50px; */
}
.bannerAbout img{
    width: 100%;height: 70vh;
}



@media (max-width : 650px) {
 .bannerAbout{
    padding-top: 50px;
 }
 .bannerAbout img{
    height: 25vh;
 }   
}