Hi, pencil icon only appears on post format : aside, if you want to hide it try this custom css code;

.format-aside:before { content: ""; }

i just checked your site, and can’t see the custom css code in my previous post. Are you sure you pasted it to “Custom CSS” box.

i just checked your markup, and you have a missing bracket that breaks the code after in your custom css code,

#header-search-link, #header-search-link:hover, #header-search-link.active {
    background-color: #dbdbdb;
    color: #333;

just add a close bracket to this piece of code;

#header-search-link, #header-search-link:hover, #header-search-link.active {
    background-color: #dbdbdb;
    color: #333;
}