hugo-theme-hello-amigo/layouts/partials/logo.html

<a href="{{ if .Site.Params.Logo.LogoHomeLink }}{{ .Site.Params.Logo.LogoHomeLink }}{{else}}{{ .Site.BaseURL }}{{ end }}"
    style="text-decoration: none;">
    <div class="logo">
        {{ if .Site.Params.Logo.path }}
        <img src="{{ .Site.Params.Logo.path }}" alt="{{ .Site.Params.Logo.alt }}" />
        {{ else }}
        <span class="logo__mark">$</span>
        <span class="logo__text">{{ with .Site.Params.Logo.logoText }}{{ . }}{{ else }}hello{{ end }}</span>
        <span class="logo__cursor"></span>
        {{ end }}
    </div>
</a>