Here you will find free and premium accordion, tabs made to implement on your website. A little HTML , CSS knowledge is required to grab the free ones listed below to implement them freely on your new website. CSS, HTML, Jquery code is shown in codepen or cssdeck website you will have to manually integrate theme without much help. Premium stuff provided here will be much more straight forward with proper docs which will let you to integrate it easily on your website.
Via Miriam Stenson