Ghost/ghost/admin/app/components/gh-notification.hbs

<article class="gh-notification gh-notification-passive {{this.typeClass}}" {{on "animationend" this.closeOnFadeOut}} ...attributes>
    <div class="gh-notification-icon">
        {{#if @message.icon}}
            {{svg-jar @message.icon}}
        {{else}}
            {{#if (eq @message.type "success")}}
                {{svg-jar "check-circle"}}
            {{else if (eq @message.type "error")}}
                {{svg-jar "warning-stroke"}}
            {{else if (eq @message.type "warn")}}
                {{svg-jar "warning-stroke"}}
            {{else}}
                {{svg-jar "check-circle"}}
            {{/if}}
        {{/if}}
    </div>
    <div class="gh-notification-content" data-test-text="notification-content">
        <span class="gh-notification-title">{{@message.message}}</span>

        {{#if @message.description}}
            <p>{{@message.description}}</p>
        {{/if}}

        {{#if @message.actions}}
            <span class="gh-notification-actions">{{@message.actions}}</span>
        {{/if}}
    </div>
    <button class="gh-notification-close" data-test-button="close-notification" type="button" {{on "click" this.closeNotification}}>
        {{svg-jar "close"}}<span class="hidden">Close</span>
    </button>
</article>