Mailu/core/admin/assets/app.css

/* mailu logo */
.mailu-logo {
  opacity: .8;
}
.bg-mailu-logo {
  background-color: #2980b9!important;
}

/* user image */
.div-circle {
  position: relative;
  width: 2.1rem;
  height: 2.1rem;
  opacity: .8;
  background-color: white;
  border-radius: 50%;
}
.div-circle > i {
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%)
}

/* nice round preformatted configuration display */
.pre-config {
  padding: 9px;
  margin: 0;
  white-space: pre-wrap;
  word-wrap: anywhere;
  border-radius: 4px;
}

/* fieldset */
legend {
  font-size: inherit;
}
fieldset:disabled :not(legend) label {
  opacity: .5;
}
fieldset:disabled .form-control:disabled {
  color: gray;
}

/* fix animation for icons in menu text */
.sidebar .nav-link p i {
  transition: margin-left .3s linear,opacity .3s ease,visibility .3s ease;
}

/* fix select2 text color */
.select2-container--default .select2-selection--multiple .select2-selection__choice {
  color: black;
}

/* range input spacing */
.input-group-text {
  margin-right: 1em;
}