mat-form-field {
  width: 100%;
}

form {
  width: calc(100% - 20px);
  padding: 10px;
  overflow: auto;
  height: calc(100vh - 275px);
}

.img-stock {
  width: calc(100% - 20px);
  height: calc(300px - 20px);
  padding: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.img-stock img {
  max-width: 100%;
  max-height: 100%;
}

textarea {
  height: 192px !important;
  resize: none;
}