.fs-preview-header {
  border-bottom: solid 2px red;
}

.fs-preview-header:after {
  content: "Theme v0.2";
  padding-left: 1em;
}

/* CaravanYuヘッダーの文字を白に */
.header-title,
.site-title,
h1.logo,
.logo a {
    color: #ffffff !important;
}