styles.css

.hm-view-browser,
.hm-view-browser-iframe {
  width: 100%;
  height: 100%;
}

.hm-view-browser-toolbar {
  display: flex;
}

.hm-view-browser-toolbar-input {
  flex: 1;
}

.hm-view-browser-toolbar-button {
  border: none !important;
  box-shadow: none !important;
  width: 25px;
  padding: 0px !important;
  align-items: center;

  >svg {
    width: 20px;
    color: var(--tab-text-color-focused) !important;
  }
}

.hm-view-browser-webframe {
  display: inline-flex;
  padding-top: 5px;
  width: 100%;
  height: 99%;
}

#helpmate-url-selector {
  appearance: none;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-chevron-down"><path d="m6 9 6 6 6-6"/></svg>') no-repeat right center;
  padding-right: 35px;
}

.hm-source-button {
  position: relative;
}

.hm-button-dropdown-menu {
  position: absolute;
  z-index: 1;
  border: 3px solid var(--divider-color);
  border-radius: 2px;
  background-color: var(--background-primary);
  top: 15px;
  max-height: 600px;
  min-width: 150px;
  overflow-y: auto;
  list-style: none;
  padding: 5px;
  color: var(--nav-item-color);
  font-size: var(--nav-item-size);
  font-weight: var(--nav-item-weight);
  line-height: var(--line-height-normal);
}

.hm-source-button-dropdown-menu {
  left: 0;
  max-height: 600px;
  min-width: 300px;
}

.hm-more-button-dropdown-menu {
  top: 30px;
  right: 0px;
  float: right;
}

.hm-source-button-list-item {
  padding-left: 5px;
}

.hm-source-button-list-item:hover {
  background-color: var(--background-modifier-hover);
}