Vamsi

work on width of this.header-image .site-title > a

eg:

.header-image .site-title > a {
    width:40%;  /* width:100%; original */
}

You can add margin for either top one or bottom one.
If you want to add style for the top one…

style="margin-bottom:30px;"

If you want to add style for the bottom one …

style="margin-top:30px;"

And also, it is better to avoid inline styles..

In your HTML
<img src="your-source" class="my-img-class"/>

and in your CSS file

.my-img-class {
 margin-bottom:30px;
}

I don’t think site will just show up if we add plugins. You need to do SEO to the site. Taking to a SEO expert might help.

You need to modify the styles for that button..

Find the style sheet in the plugin directory. And change the button styles..

https://navodayahighschool.com/2013/06/26/word-press-ss-quiz-demo/