_edge.scss

// Edge
// ---------------------------------------
@mixin edge-only(){
  @supports (-ms-accelerator:true) {
    & {
      @content;
    }
  }
}

@include edge-only {
  margin-top: -140px;
}

_firefox.scss

// Firefox
// ---------------------------------------
@mixin firefox-only {
  @at-root {
    @-moz-document url-prefix() {
      & {
        @content;
      }
    }
  }
}

@include firefox-only {
  margin-top: -140px;
}

_ie.scss

// IE 11
// ---------------------------------------
@mixin ie-11-only {
  @media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
    @content;
  }
}

@mixin ie-flex {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-flex: 1;
  -webkit-flex: 1 0 auto;
  -ms-flex: 1 0 auto;
  flex: 1 0 auto;
  -webkit-flex-flow: column wrap;
  -ms-flex-flow: column wrap;
  flex-flow: column wrap;
}

@include ie-11-only {
  .container-div {
    @include ie-flex;
  }
}