I want to remove staight line that shows in my blog page. It is only shows in firefox not in the chrome

Question

I want to remove staight line that shows in my blog page. It is only shows in firefox not in the chrome. I don't know why it is showing in firefox?

I have added :

My website link

Answer 1

remove width:1px in style.css line No: 5149

#main-content .container::before {
    position: absolute;
    top: 0;
    width: 0px;
    height: 100%;
    background-color: #e2e2e2;
    content: "";
}