How to install horizontal popular post plugin in header

please post a link to your site to illustrate what you have so far;

what plugin exactly are you trying to use (download link)?

if the plugin works via a widget, you might need to create a new widget area for your header first; https://codex.www.ads-software.com/Widgetizing_Themes

the plugin is possibly outputting an unordered list which you need to style using css; web search ‘style list horizontal css’

MY Website: https://www.fashion46.com
i am using “Snow Summit” theme

i have tried this two plugins.
1) WordPress Jcarousel Post Slider
2) Carousel Horizontal Posts Content Slider

plz tell me how can i use css style to show horizontzl post in 150*150 in header.
Like This : https://img10.imageshack.us/img10/973/popularpost.jpg