discourse-solved/assets/stylesheets/mobile/solutions.scss

#topic-title .d-icon-far-square-check {
  margin-top: 0.25em;
}

.topic-post {
  nav.post-controls {
    .extra-buttons {
      button {
        max-width: unset;
        white-space: nowrap;
      }
    }
    &.expanded {
      .accepted,
      .unaccepted {
        .d-button-label {
          display: none;
        }
      }
    }
  }
}

li.solved-status-filter {
  margin: 0 3px 5px 3px; // matches core styles
}