layout-builder-ux.css in Layout Builder UX 8

.layout-builder__section {
  position: relative;
  padding: 1.5em;
  outline: 2px dashed #979797;
}

.layout-builder__actions {
  display: inline-flex;
  align-items: center;
  padding: 0 0 0 6px;
  text-transform: uppercase;
  color: #fff;
  font-size: 12px;
}

.layout-builder__actions__section {
  position: absolute;
  top: 0;
  left: 0;
  transition: all 100ms linear;
  opacity: 0;
  background-color: #777;
}

.layout-builder__section:hover .layout-builder__actions__section {
  opacity: 1;
}

.layout-builder__actions__block {
  position: absolute;
  top: 0;
  left: 0;
  transition: all 100ms linear;
  opacity: 0;
  background-color: #618eab;
}

.layout-builder__region > .layout-builder-block:hover:not(.ui-state-drop) .layout-builder__actions__block,
.layout-builder__region > .layout-builder-block:focus:not(.ui-state-drop) .layout-builder__actions__block {
  opacity: 1;
}

.layout-builder__actions--display {
  opacity: 1;
}

.layout-builder__actions .layout-builder__section-label {
  display: inline-block;
  margin-right: 4px;
}

.layout-builder__actions .layout-builder__block-label {
  margin-right: 4px;
}

.layout-builder__actions .layout-builder__link {
  position: relative;
  z-index: 2;
  display: inline-block;
  box-sizing: border-box;
  width: 24px;
  height: 24px;
  margin: 0;
  padding: 0;
  pointer-events: auto;
  border: 0;
  border-radius: 0;
  font-size: 1rem;
}

.layout-builder__actions .layout-builder__link:hover {
  background-color: #555;
}

.layout-builder__actions .layout-builder__link--configure {
  background: url(../images/ffffff/cog.svg) center center / 12px 12px no-repeat;
}

.layout-builder__actions .layout-builder__link--move {
  background: url(../images/ffffff/move.svg) center center / 12px 12px no-repeat;
}

.layout-builder__actions .layout-builder__link--remove {
  background: url(../images/ffffff/ex.svg) center center / 12px 12px no-repeat;
}

.layout-builder__link--add {
  display: block;
  padding: 0.5em 0;
  padding-left: 30px;
  transition: all 100ms linear;
  text-transform: uppercase;
  background-position: 10px center;
  font-size: 12px;
}

.layout-builder__link--add:hover {
  background-image: url(../images/ffffff/plus.svg);
}

.layout-builder__add-section {
  padding: 0;
  text-align: left;
  outline: initial;
  background-color: #eee;
}

.layout-builder__add-section .layout-builder__link--add {
  color: #777;
}

.layout-builder__add-section .layout-builder__link--add:hover {
  color: white;
  background-color: #777;
}

.layout-builder__add-block {
  padding: 0;
  transition: all 100ms linear;
  text-align: left;
}

.layout-builder__add-block .layout-builder__link--add {
  color: #618dac;
}

.layout-builder__add-block .layout-builder__link--add:hover {
  color: white;
  background-color: #618dac;
}

.layout-builder__region {
  outline: initial;
}

.layout-builder__region > .layout-builder-block {
  position: relative;
  margin: 10px 5px;
  padding: 1em;
  border: 2px dotted #618dac;
}

.layout-builder__region > .layout-builder-block:hover:not(.ui-state-drop),
.layout-builder__region > .layout-builder-block:focus:not(.ui-state-drop) {
  border: 2px solid #618dac;
}

.layout-builder__add-block {
  margin: 10px 5px;
}

.layout-builder__section .ui-sortable-helper {
  border: 2px solid #618dac;
  outline: initial;
  box-shadow: 0 10px 24px 0 rgba(0, 0, 0, 0.5);
}

.layout-builder__section .ui-state-drop {
  margin: 10px 5px;
  padding: 1em;
  border: none;
  outline: none;
  background-color: #fed87a;
  background-image: repeating-linear-gradient(45deg, #fed87a, #fed87a 9px, #fff88d 9px, #fff88d 12px);
}

.ui-state-drop > div {
  opacity: 0;
}

/* Remove border from 'inner' layout builder block when it is highlighted. */
.layout-builder-block .layout-builder-block.is-layout-builder-highlighted,
.layout-builder__layout.is-layout-builder-highlighted {
  border: 0;
}

/* Override colors and floats that Bartik sets. */
.layout-container .region-header .layout-builder-block {
  float: none;
  clear: none;
}

/* Layout Selection */
#drupal-off-canvas .layout-selection li {
  padding-bottom: 0;
}

#drupal-off-canvas .layout-selection li a {
  display: flex;
  margin: 0 -20px;
  padding: 15px 0;
  padding-left: 25px; /* LTR */
}
[dir="rtl"] #drupal-off-canvas .layout-selection li a {
  padding-right: 25px;
  padding-left: 0;
}

#drupal-off-canvas .layout-selection li a:hover {
  background-color: #333;
}

#drupal-off-canvas .layout-selection li a svg {
  margin-right: 1em; /* LTR */
  background-color: inherit;
}
[dir="rtl"] #drupal-off-canvas .layout-selection li a svg {
  margin-right: 0;
  margin-left: 1em;
}

#drupal-off-canvas .layout-selection li a div {
  padding-top: 0.55em;
  background-color: inherit;
}

.ui-dialog.ui-dialog-off-canvas .ui-resizable-handle {
  width: 20px;
  height: 50px;
  top: 20vw;
  background: #444;
  box-shadow: 0 0 4px 2px rgba(0, 0, 0, 0.3333);
  display: flex;
  align-items: center;
  justify-content: center;
}
.ui-dialog.ui-dialog-off-canvas .ui-resizable-handle:before {
  content: '';
  background: #bbb;
  width: 2px;
  display: block;
  height: 30px;
  border-radius: 1px;
}
.ui-dialog.ui-dialog-off-canvas .ui-resizable-w {
  left: -20px;
}
.ui-dialog.ui-dialog-off-canvas .ui-resizable-w:before {
  margin-left: -20%;
  box-shadow: 6px 2px 0 0 #bbb, 6px -2px 0 0 #bbb;
}
.ui-dialog.ui-dialog-off-canvas .ui-resizable-e {
  right: -20px;
}
.ui-dialog.ui-dialog-off-canvas .ui-resizable-e:before {
  margin-right: -20%;
  box-shadow: -6px 2px 0 0 #bbb, -6px -2px 0 0 #bbb;
}