.welcome_img{
    position: relative;
    min-height: 100vh;
    overflow: hidden;
}
.welcome__overlay{
    position:absolute;
    inset:0; background: rgba(0,0,0,0, 0.12);
    pointer-events:none;
    z-index:0;
}

.welcome__content
{ position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:100vh;
}

.welcome__content a,
.welcome__content button
{
    position:relative;
    z-index:2;
}