index.css

.tag-picker__text,
.tag-picker__tag {
  align-items: center;
  border: 1px solid;
  border-color: inherit;
  display: flex;
  gap: 0.25em;
  justify-content: center;
  overflow: hidden;
  padding: 0 0.25em;
  position: relative;
  text-decoration: none;
}

.tag-picker,
.tag-picker * {
  box-sizing: border-box;
  color: inherit;
  font: inherit;
  outline: 0;
}

.tag-picker {
  border: 1px solid;
  cursor: text;
  display: inline-flex;
  flex-wrap: wrap;
  position: relative;
  vertical-align: middle;
}
.tag-picker__self {
  left: -9999px;
  position: fixed;
  top: -9999px;
}
.tag-picker__self:disabled + .tag-picker {
  color: rgb(128, 128, 128);
}
.tag-picker__self:disabled + .tag-picker,
.tag-picker__self:disabled + .tag-picker * {
  cursor: not-allowed;
}
.tag-picker__self:read-only + .tag-picker .tag-picker__x {
  cursor: not-allowed;
}
.tag-picker__tag {
  cursor: pointer;
}
.tag-picker__tag:focus {
  outline: 2px solid;
  outline-offset: -2px;
}
.tag-picker__tag--selected {
  background: rgba(0, 0, 255, 0.5);
}
.tag-picker__tag ::selection {
  background-color: transparent;
  color: inherit;
}
.tag-picker__tag + .tag-picker__text span + span {
  display: none;
}
.tag-picker__tags {
  border-color: inherit;
  display: flex;
  flex-wrap: wrap;
  flex: 1;
  gap: 1px;
  padding: 1px;
}
.tag-picker__text {
  border-color: transparent;
  flex: 1;
}
.tag-picker__text span {
  flex: 1;
  position: relative;
  z-index: 1;
}
.tag-picker__text span::after {
  content: "‌";
}
.tag-picker__text span * {
  display: inline;
}
.tag-picker__text span br {
  display: none;
}
.tag-picker__text span + span {
  align-items: center;
  bottom: 0;
  display: flex;
  left: 0;
  opacity: 0.5;
  padding: inherit;
  position: absolute;
  right: 0;
  top: 0;
  white-space: nowrap;
  z-index: 0;
}
.tag-picker__x {
  height: 1em;
  line-height: 0;
  margin-right: -0.125em;
  position: relative;
  width: 1em;
}
.tag-picker__x::after,
.tag-picker__x::before {
  border: 1px solid;
  bottom: 0;
  content: "";
  left: 50%;
  margin-left: -1px;
  position: absolute;
  top: 0;
}
.tag-picker__x::after {
  transform: rotate(45deg);
}
.tag-picker__x::before {
  transform: rotate(135deg);
}