MyCrypto/common/sass/styles/overrides/alerts.scss

// Extends Bootstrap's `.alert`
@import "common/sass/variables";
@import "common/sass/mixins";
@import "~bootstrap-sass/assets/stylesheets/bootstrap/alerts";

.alert {
  margin-bottom: 1rem;

  a {
    color: #FFF;
    font-weight: normal;
    text-decoration: underline;

    &:hover {
      color: #FFF;
      opacity: 0.8;
    }
  }
}

// Alert icons
.alert:after {
  content: '';
  background-position: 50%;
  background-repeat: no-repeat;
  background-size: contain;
  display: block;
  color: #fff;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 1%;
  width: $space * 2;

  @media screen and (max-width: $screen-sm) {
    left: 3%;
  }
  @media screen and (max-width: $screen-xs) {
    left: 1%;
  }
}

.alert,
.alert-info {
  @include alert-variant($alert-info-bg, $alert-info-border, $alert-info-text);
}

.alert-success {
  @include alert-variant($alert-success-bg, $alert-success-border, $alert-success-text);
}

.alert-warning {
  @include alert-variant($alert-warning-bg, $alert-warning-border, $alert-warning-text);
}

.alert-danger {
  @include alert-variant($alert-danger-bg, $alert-danger-border, $alert-danger-text);
}