Contents of each page on the homepage(feature image)

I just put some information onto each page and set up feature image on them. The feature image shows correctly, however, the contents of each page is showing under incorrect format on the homepage, for example, the content is ” abcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcd” , it will show the whole line on the page instead of automatically beak down the paragraph. Please advise. Thanks guys.