html{
    margin: 0;
    width:  100%;
    height: 100%;
    background-image: 
    linear-gradient( rgba(0,0,0,.5), rgba(0, 0, 0, 0.6) ),
    url("/assets/img/bg_radi_red_dark.png");
    touch-action: none;
}

.wrapper {
    /* Break the flow */
    position: absolute;
    top: 0px;
    /* Give them all the available space */
    width: 100%;
    height: 100%;
  
    /* Remove the margins if any */
    margin: 0;
    overflow: hidden;
    
  }

  main{
      height: 100%;
  }