Settings

- My Projects: Grid recommended
- Collections: Grid only
- Banner: optional (247x50)
- Border Radius: 0
- Colors: #34393f, #000000, #000000

HTML

use <h2> for subtitles and it will automatically have a bottom border.

CSS

 /*=======================Header=======================*/
 .header {
     height: 50px;
     width: 100%;
     position: sticky;
     top: 0;
     backdrop-filter: blur(1px);
     box-shadow: 0 2px 4px 0 rgba(0,0,0,.5);
     background-color: rgba(23, 29, 37, 0.85);
     z-index: 1;
}
 .header h1 {
     color: white;
     text-transform: uppercase;
     margin: 0px !important;
}
 .user_links {
     display: none;
}
/*=======================Profile=======================*/
 .profile_content {
}
 .profile_content h2{
     border-bottom: 1px solid #b8b8b8;
     margin-bottom: 16px;
     padding-top: 10px;
     padding-bottom: 10px;
}
 .profile_column {
     margin-bottom: 20px;
     border-bottom: 1px solid #b8b8b8;
}
/*=======================My Projects=======================*/
 @media only screen and (min-width:769px) {
     .user_game_grid {
         --itchio_grid_gap: 20px !important;
         --itchio_grid_cell_width: 225px !important;
         --itchio_grid_cell_columns: 4 !important;
         grid-template-columns: repeat(auto-fit, 225px) !important;
         justify-content: center !important;
    }
}
/*=======================Collections=======================*/
 .collection_row h2{
     border-bottom: 1px solid #b8b8b8;
     margin-bottom: 16px;
     padding-top: 10px;
     padding-bottom: 10px;
}
 .collection_description {
     display: none;
     margin-top: 16px !important;
     margin-bottom: 24px !important;
}
 .game_grid_widget.game_list {
     grid-template-columns: none !important;
     grid-gap: 0 !important;
}
/*=======================Game Cell - general=======================*/
 .game_cell {
     margin: 2px !important;
     background-color: #ededed;
     box-shadow: 0 2px 4px 0 rgba(0, 0, 0, .15);
}
 .game_cell:hover {
     background-color: #f9f9f9;
     box-shadow: 0 2px 8px 0 rgba(0, 0, 0, .2), 0 1px 4px 0 rgba(0, 0, 0, .15);
}
 .game_cell_data {
     padding: 12px 16px 16px;
     flex: 1;
}
 .game_text, .game_genre {
     display: none;
}
 .game_platform {
     direction: rtl;
     margin-top: 16px;
}
 .web_flag {
     color: rgba(0, 0, 0, 0)!important;
     background: url(https://i.imgur.com/XFREQJG.png) !important;
     image-rendering: crisp-edges !important;
     background-position: center !important;
     background-repeat: no-repeat !important;
     width: 14px;
     height: 14px;
}
 .user_page_wrap .icon {
     color: #6e1d72 !important;
}
/*=======================Game Cell - collections=======================*/
 .game_list .lazy_loaded {
    /*Teste*/
     height: 81px !important;
     width: 100% !important;
}
 .game_list .game_cell {
     display: inline-flex;
     height: 81px;
}
 .game_list .game_cell_data {
     flex-wrap: wrap;
     align-content: space-between;
}
/*=======================Others=======================*/
 .user_page_wrap {
     background-color: #d9d9d9;
}
 .user_page_wrap * {
     user-select: none;
}
 .user_page_wrap a * {
     text-decoration: none !important;
}
 .footer {
     background-color: #262626;
     border: thin solid #262626;
}
 .footer a {
     color: white;
}
 

Browser icon by Icons8

Header inspiration on Oroshibu - itch.io

Colors and Design inspiration on GOG