Lightning-Tracker/res/~resources/css/forms.css

form .field-group {
  margin-bottom: 12px;
}

form .message {
  font-size: 15px;
  margin: 0 0 20px;
}

form .message .icon {
  margin-right: 3px;
}

form .message.success {
  color: #2a6600;
}

form .message.error {
  color: #8c1b1b;
}

input, select {
  display: inline-block;
  margin-bottom: 8px;
  color: #000000;
  font-size: 15px;
}

input[type=text],
input[type=password],
input[type=email],
input[type=number],
textarea,
select {
  padding: 7px;
  width: 100%;
  border: 1px solid #333333;
  border-radius: 5px;
}

input[type=text].invalid,
input[type=password].invalid,
input[type=email].invalid,
input[type=number].invalid,
textarea.invalid,
select.invalid {
  border: 1px solid #8c1b1b;
  box-shadow: 0 0 4px -2px #8c1b1b inset;
}

input[type=text]:focus,
input[type=password]:focus,
input[type=email]:focus,
input[type=number]:focus,
textarea:focus,
select:focus {
  outline: none !important;
  box-shadow: 0 0 4px -2px #1b618c inset;
}

input[type=text]:disabled,
input[type=password]:disabled,
input[type=email]:disabled,
input[type=number]:disabled,
textarea:disabled,
select:disabled {
  color: #222222;
  background-color: #e2e2e2;
}

textarea {
  min-height: 75px;
  height: 140px;
  resize: vertical;
}

select {
  appearance: none;
  -moz-appearance: none;
  -webkit-appearance: none;
}

select[size] {
  padding: 0;
  overflow: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

select:not([size]) {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 5'%3E%3Cpath d='M3.996,5l3.996,-5l-7.992,0l3.996,5Z'/%3E%3C/svg%3E") no-repeat calc(100% - 8px) 50% / 11px;
}

select:not([size]):disabled {
  background: #e2e2e2 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%237d7d7d' viewBox='0 0 8 5'%3E%3Cpath d='M3.996,5l3.996,-5l-7.992,0l3.996,5Z'/%3E%3C/svg%3E") no-repeat calc(100% - 8px) 50% / 11px;
  color: #222222;
}

@supports (-moz-appearance: none) {
  select:not([size]) {
    padding: 7px 3px;
  }

  option:checked {
    color: #ffffff;
    box-shadow: 0 0 0 100px #2b5e7d inset;
  }
}

@supports not (-moz-appearance: none) {
  select[size]::-webkit-scrollbar {
    width: 0;
    display: none;
  }

  select:not([size]) select:focus option:checked {
    color: #ffffff;
    box-shadow: 0 0 0 100px #2b5e7d inset;
  }
}

option {
  padding: 7px;
  outline: none;
}

option:not(:disabled) {
  cursor: pointer;
}

option.icon:before {
  /*noinspection CssNoGenericFontName*/
  font-family: 'icomoon' !important;
  margin-right: 5px;
  line-height: 17px;
  vertical-align: -6%;
}

details.multiselect > summary {
  border: 1px solid #333333;
  border-radius: 5px;
  padding: 4px 28px 4px 7px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 5'%3E%3Cpath d='M3.996,5l3.996,-5l-7.992,0l3.996,5Z'/%3E%3C/svg%3E") no-repeat calc(100% - 8px) 50% / 11px;
  overflow: hidden;
  font-style: italic;
  text-overflow: ellipsis;
  cursor: pointer;
  list-style: none;
}

details.multiselect > summary::-webkit-details-marker {
  display: none;
}

details.multiselect > article {
  position: absolute;
  overflow-x: hidden;
  overflow-y: auto;
  max-height: 235px;
  margin: 4px 0 0 !important;
  padding: 6px 5px 1px;
  border: 1px solid #333333;
  border-radius: 5px;
  background-color: #ffffff;
  z-index: 100;
}

details.multiselect > article .field-group {
  margin: 1px 0;
}

details.multiselect > article .icon {
  font-size: 13px;
}

details.multiselect > article .issue-tag {
  opacity: 0.3;
  margin-left: -20px;
}

details.multiselect > article .issue-tag:before {
  border-radius: 0;
  box-shadow: none;
}

label {
  display: inline-block;
  margin-bottom: 4px;
  font-weight: bold;
}

input[type=checkbox]:not(:disabled),
label:not(.disabled) {
  cursor: pointer;
}

input[type=checkbox] + label {
  font-size: 15px;
  font-weight: normal;
  vertical-align: 5%;
  /* extends clickable label area to cover space between it and the checkbox */
  margin-left: -7px;
  padding-left: 7px;
}