Ikarus Theme……… HELP

Does anyone have any ideas to fixing my problem. I have the Ikarus theme, it’s working fine basically on Firefox browser but on the internet Explorer there is a few problems with it. One is my tabs which should be on the left hand side of the page ie categories,pages, archives and comments isn’t showing up, and the arrows which are on either of my images, on the top of my website don’t look right either.
Here’s my link to show …… https://candi-the-cavalier.co.uk/

Thanks

ails