To change border (width, style, color) of Read More button of Content Views, please use this CSS:
/* Change border of Read More button */ .pt-cv-view .pt-cv-readmore { border-width: 3px !important; border-style: solid !important; border-color: red !important; } .pt-cv-view .pt-cv-readmore:hover { border-width: 3px !important; border-style: solid !important; border-color: red !important; }
You can change values of width, style, color as you want.
Best regards,