Errors:
Attribute “xmlns:og” not allowed here.
Attribute “xmlns:fb” not allowed here.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Bad value “https://theeventscalendar.com/” for attribute “rel” on element “link”: The string “https://theeventscalendar.com/” is not a registered keyword.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Stray end tag “source”.
The element “button” must not appear as a descendant of the “a” element.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “https://serverius.net/wp-content/uploads/2018/04/ddos-attack-opinion.jpg 1x, https://serverius.net/wp-content/uploads/2018/04/ddos-attack-opinion.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…opinion.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2018/04/ddos-attack-opinion-thegem-blog-masonry-100-medium.jpg 1x, https://serverius.net/wp-content/uploads/2018/04/ddos-attack-opinion.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…-medium.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2018/04/ddos-attack-opinion-thegem-blog-masonry-4x.jpg 1x, https://serverius.net/wp-content/uploads/2018/04/ddos-attack-opinion.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…onry-4x.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2018/03/WAF-plaatje-blog.jpg 1x, https://serverius.net/wp-content/uploads/2018/03/WAF-plaatje-blog.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…je-blog.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2018/03/WAF-plaatje-blog-thegem-blog-masonry-4x.jpg 1x, https://serverius.net/wp-content/uploads/2018/03/WAF-plaatje-blog.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…onry-4x.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2018/02/spine.jpg 1x, https://serverius.net/wp-content/uploads/2018/02/spine.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…2/spine.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2018/02/spine-thegem-blog-masonry-4x.jpg 1x, https://serverius.net/wp-content/uploads/2018/02/spine.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…onry-4x.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2018/02/HaithamMoghrabi-square-light-small.jpg 1x, https://serverius.net/wp-content/uploads/2018/02/HaithamMoghrabi-square-light-small.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…t-small.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…-medium.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…onry-4x.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2017/12/sem-hindriksen-photo-tiny.jpg 1x, https://serverius.net/wp-content/uploads/2017/12/sem-hindriksen-photo-tiny.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…to-tiny.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2017/12/sem-hindriksen-photo-tiny-thegem-blog-masonry-4x.jpg 1x, https://serverius.net/wp-content/uploads/2017/12/sem-hindriksen-photo-tiny.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…onry-4x.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2017/12/tdcg-amsterdam-colocation-pop.jpg 1x, https://serverius.net/wp-content/uploads/2017/12/tdcg-amsterdam-colocation-pop.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…ion-pop.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2017/12/tdcg-amsterdam-colocation-pop-thegem-blog-masonry-4x.jpg 1x, https://serverius.net/wp-content/uploads/2017/12/tdcg-amsterdam-colocation-pop.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…onry-4x.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2017/12/bgp-anycast-routing-round-the-globe-front.jpg 1x, https://serverius.net/wp-content/uploads/2017/12/bgp-anycast-routing-round-the-globe-front.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…e-front.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2015/07/serverius-dc1.jpg 1x, https://serverius.net/wp-content/uploads/2015/07/serverius-dc1.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…ius-dc1.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2015/07/serverius-dc1-thegem-blog-masonry-100-medium.jpg 1x, https://serverius.net/wp-content/uploads/2015/07/serverius-dc1.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…-medium.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Bad value “https://serverius.net/wp-content/uploads/2015/07/serverius-dc1-thegem-blog-masonry-4x.jpg 1x, https://serverius.net/wp-content/uploads/2015/07/serverius-dc1.jpg 2x” for attribute “srcset” on element “source”: Expected width descriptor but found “1x” at “…onry-4x.jpg 1x,”. (When the “sizes” attribute is present, all image candidate strings must specify a width.)
Duplicate ID “menu-products-and-services”.
Bad value “80%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The first occurrence of ID “menu-products-and-services” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Iran IR