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

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


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