body{
    min-height: 100vh;
    background: rgba(207, 37, 31, .12);
}
.main{
    min-height: 100vh;
    position: relative;
    padding-bottom: 4vw;
}
.main>.bgimgtop{
    width: 100vw;
    -webkit-mask: linear-gradient(to top, rgba(0,0,0,0) 0%, rgba(255,255,255,1) 35%);
}
.project_cover{
    position: absolute;
    left: 0;
    top: 48vw;
    z-index: 1;
}