www/templates/error.html
<head>
<title>Shikaku Error</title>
<link rel="stylesheet" href="/public/main.css"/>
<link href="https://fonts.googleapis.com/css?family=Bitter" rel="stylesheet">
</head>
<body>
<div class="err_main">
<section class="base_container">
<div class="err_bang">!</div>
{{ if .Message }}
<h1>{{ .Message }}</h1>
<p>{{ .Status }}: {{ statusText .Status}}
{{ else }}
<h1>{{ .Status }}: {{ statusText .Status }}</h1>
{{ end }}
<div>
<a class="err_back" href="#" onclick="window.history.back()">< Back</a>
<a class="err_home" href="/">Home</a>
</div>
</section>
</div>
</body>