Twig_Error_Syntax due to second for on page?

Question

Twig

An error is thrown:

Fatal error: Uncaught exception 'Twig_Error_Syntax' with message 'Unexpected "i" tag (expecting closing tag for the "for" tag defined near line 46) in...

Swears at:

{% set i = 1 %}
{% for i in 1..banners|length %}
#slideshow div:nth-child( {% i %} ) { animation-delay: {% i %}s;  }
{% endfor %}

This is a piece of css.
Moreover, I already called for above:

<div id="slideshow{{ module }}">{% for banner in banners %}
<div style='background-image: url("{{ banner.image }}"); display: block;'></div>
{% endfor %}

Maybe two for is a lot for twig?

Answer 1

{{ i }} instead of {% i %}