superset/caravel/assets/stylesheets/explore.css

.widget {
    position: relative;
}

.slice_container {
    position: absolute;
    left: 0;
    top: 0;
    background-color: #fff;
}

.navbar {
  margin-bottom: 22px;
}

.query-and-save-btns-container {
  margin-bottom: 22px;
}

.star-edit-icons {
  padding-left: 10px;
  font-size: 50%;
}