trusted-setup-server/assets/styles/components/_button.scss

.button {
  transition: color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out;
  font-weight: $weight-bold;

  &.is-primary.is-outlined {
    background-color: rgba($primary, .104);

    &.is-loading:focus {
      background-color: rgba($primary, .104);

      &::after {
        border-color: transparent transparent $primary $primary !important;
      }
    }
  }

  &.is-loading {
    &::after {
      border-radius: 100%;
    }
  }

  &.is-icon {
    padding:0;
    width: 18px;
    height: 18px;
    background-color: transparent;
    border: none;

    svg {
      height: 100%;
      width: 100%;
    }

    &:hover {
      path:not(.no-hover) {
        fill: #87feb7;
        transition: fill .15s ease-out;
      }
    }

    &:focus:not(:active) {
      box-shadow: none;
    }

    .icon:first-child:last-child {
      margin: 0;
    }
  }
}