@media (max-width:767px) {
  .node--view-mode-teaser .field--name-field-image {
    min-width: 100%;
  }

  .view .node--view-mode-teaser .node__title,
  .view .node--view-mode-teaser .node__content .field--name-field-image {
    padding-right: 0 !important;
    margin-right: 0 !important;
  }

}