.attachment img[src$=".svg"],
.widget_media_image img[src$=".svg"] {
  width: 100%;
}
.attachment img[src$=".svg"],
.widget_media_image img[src$=".svg"] {
  width: 100%;
}
.attachment svg,
.widget_media_image svg {
  max-width: 100%;
  height: auto;
}