superset/caravel/assets/stylesheets/welcome.css

.table i {
  padding-top: 6px;
}

img.loading {
    width: 25px;
}

.welcome table {
    display: none;
    width: 100%;
}

input {
    margin-left: 5px;
    margin-top: 8px;
}

.panel-body {
    overflow: auto;
}

.cal-heatmap-panel {
  padding: 20px;
  background-color: #fff;
}
.search input {
  width: 400px;
}
.search-container .fa-search {
  float: left;
  margin-left: -25px;
  margin-top: 12px;
  font-size: 18px;
}