Dcat-Admin/resources/assets/sass/bootstrap-extended/_toast.scss

// Toasts

// toast container customization
.toast-bs-container{
    z-index: 1040;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;

    .toast-position{
      position: relative;
      top: 0;
      right: 0;
      display: flex;
      flex-direction: column;
      flex-wrap: wrap-reverse;

      .toast.show{
        // display: block;
        opacity: 1;
        z-index: 1030;
      }
    }
  }

  // placement of toast on body
  .toast-placement{
    position: static;
    top: 0;
    .toast{
      position: fixed;
      top: 0;
      z-index: 1030;
    }
  }

  // default toast customization
  .toast {
    display: none;
    background-color: rgba($white,1);
    margin-top: .75rem;

    .toast-header{
      .close{
        &:focus,&:active{
          outline: none;
        }
      }
    }
  }

  // toast on show

  .toast.show.toast-wrapper{
    position: static;
  }

  // translucent toast opacity and display

  .toast.toast-translucent {
    opacity: 1;
    display: block;
  }

  // toast header img size

  .toast-header{
      img{
          width: 35px;
          height: 24px;
      }
  }

 // IE Specific CSS
 @media screen and (-ms-high-contrast: active), (-ms-high-contrast: none){
  .toast-bs-container {
    position: fixed !important;
    left: 74% !important;
    }
 }

  _:-ms-lang(x),
  .toast-bs-container {
    position: fixed !important;
    left: 74% !important;
  }