titles should only be used if a link's visible text does not appropriately describe the destination of the link.
the titles that were removed were merely duplicates of the visible text, so there was no benefit in keeping them.
role="search" can not be placed on a ```<form>``` element, as it will overwrite the form's inherent role. Instead, the search role should be applied to a ```<div>``` that wraps all the elements that make up the search component, within the ```<form>```.
Inputs should always have an a label associated with them. To rectify this, I've added an ```aria-label="Search:" to stand in for the label element.
Removed the ```role="button"``` from the submit button, as it's redundant to the inherent semantics of the button element.