 

.markdown-preview.markdown-preview {
    background-color: @markdown-preview-background-color;
    color: @markdown-preview-text-color;
    border: @markdown-preview-background-color solid @markdown-preview-border-color;
    .markdown-body {
        color: @markdown-preview-text-color;
        word-wrap: normal;
    }
}

.markdown-preview:not([data-use-github-style]) {
    strong {
        color: @markdown-preview-text-color;
    }
    a {
        color: darken(@theme-blue, 40%);
        font-weight: 600;
    }
    h1, h2, h3, h4, h5, h6 {
        color: @markdown-preview-text-color;
    }
}



.markdown-preview.markdown-preview {
    background-color: @markdown-preview-background-color;
    color: @markdown-preview-text-color;
    border: @markdown-preview-background-color solid @markdown-preview-border-color;
    .markdown-body {
        color: @markdown-preview-text-color;
        word-wrap: normal;
    }
}

.markdown-preview:not([data-use-github-style]) {
	strong {
        color: @markdown-preview-text-color;
    }
    a {
        color: #3392C9;
        font-weight: 600;
    }
    h1, h2, h3, h4, h5, h6 {
        color: @markdown-preview-text-color;
    };
	h1, h2 {
		border-bottom: 1px solid @lighter-gray !important;
		margin-top: 20px !important;
	}
	h4 {
		font-size: 17px;
		margin-top: 16px;
	}
	hr {
		margin: 0 10px;
		border: 2px solid @lighter-gray;
	}
	atom-text-editor {
		background: @theme-background-color;
		color: @lighter-gray;
	}
	p {
		font-size: 16px;
		margin-bottom: 18px;
	}
}

Improve Markdown-Preview rendering to resemble Githubs
Improve Markdown-Preview rendering to resemble Githubs
