lbry-desktop/ui/scss/component/_header.scss

#header
{
  color: var(--header-color);
  background: var(--header-bg);
  display: flex;
  position: fixed;
  box-shadow: var(--box-shadow-layer);
  top: 0;
  left: 0;
  width: 100%;
  z-index: 3;
  padding: $spacing-vertical / 2;
  box-sizing: border-box;
}
.header__item {
  flex: 0 0 content;
  padding-left: $spacing-vertical / 4;
  padding-right: $spacing-vertical / 4;
  .button-alt {
      background: var(--header-button-bg) !important;
      font-size: 18px;
  }
  .button-alt:hover {
      background: var(--header-button-hover-bg) !important;
  }
}

.header__item--wunderbar {
  flex-grow: 1;
}

.wunderbar
{
  position: relative;
  .icon {
    position: absolute;
    left: 10px;
    top: $spacing-vertical / 2  - 4px; //hacked
  }
}

.wunderbar--active .icon-search { color: var(--color-primary); }

.wunderbar__input {
  background: var(--search-bg);
  width: 100%;
  color: var(--search-color);
  height: $spacing-vertical * 1.5;
  line-height: $spacing-vertical * 1.5;
  padding-left: 38px;
  padding-right: 5px;
  border-radius: 2px;
  border: var(--search-border);
  transition: box-shadow var(--transition-duration) var(--transition-type);
  &:focus {
    background: var(--search-active-bg);
    color: var(--search-active-color);
    box-shadow: var(--box-shadow-focus);
    border-color: var(--color-primary);
  }
}