Help making wp dropdown horizontal menu

So you have a vertical menu at the moment?

I do not have any menu at the moment, I would like to use the suffusion theme but that all depends on the menu, I can code the css and wp_nav_menu from scratch but I cant find a way

This code works to a point but I cant get the sub pages to start on the left side of the page, they start below the parent instead.

nav#nav ul.sf-menu{
            background-color: #202020;
            display: block;
            font-size:1.1em;
            height:30px;
            width:100%;
    }

    nav#nav ul.sf-menu,
    nav#nav ul.sf-menu ul {
       line-height: 1;
       list-style: none;
    }

    nav#nav ul.sf-menu a ,
    nav#nav ul.sf-menu a:hover{
       border:none;
       display: block;
       text-decoration: none;
    }

    nav#nav ul.sf-menu li {
       float: left;
       list-style:none;
    }

    nav#nav ul.sf-menu a,
    nav#nav ul.sf-menu a:visited {
       color:#109dd0;
       display:block;
       font-weight:bold;
       padding:6px 12px;
    }

    nav#nav ul.sf-menu a:hover,
    nav#nav ul.sf-menu a:active {
       color:#fff;
       text-decoration:none
    }   

    nav#nav ul.sf-menu li ul {

       height: auto;
       left:auto;
       right:auto;
       position: absolute;
       width: 900px;
    z-index:9999;
    }

    nav#nav ul.sf-menu li li {
       width: auto;
       clear:none;
       float:left;
       left:auto;
       right:auto;
    }

    nav#nav ul.sf-menu li li a,
    nav#nav ul.sf-menu li li a:visited {
            color:#109dd0;
       font-weight:normal;
       font-size:0.9em;
    }

    nav#nav ul.sf-menu li li a:hover,
    nav#nav ul.sf-menu li li a:active {
       color:#fff;
    }   

    nav#nav ul.sf-menu li:hover ul,
    nav#nav ul.sf-menu li li:hover ul,
    nav#nav ul.sf-menu li li li:hover ul,
    nav#nav ul.sf-menu li.sfhover ul,
    nav#nav ul.sf-menu li li.sfhover ul,
    nav#nav ul.sf-menu li li li.sfhover ul {
       left: 30px;

    }

This code works to a point

Sorry, we need to see a working example of the webpage with the issue.

https://socialchange.is

I don’t see an issue in that webpage, does it occur in a particular browser or browser version?