.tree-ltr ul {
    display: flex;
    width:100%;
    overflow-x: auto;

    margin-bottom: 5px;
    padding-top: 10px; position: relative;
    transition: all 0.2s;
    -webkit-transition: all 0.2s;
    -moz-transition: all 0.2s;
}

.tree-ltr li {
    float: left; text-align: center;
    list-style-type: none;
    position: relative;
    padding: 10px 5px 0 5px;

    transition: all 0.2s;
    -webkit-transition: all 0.2s;
    -moz-transition: all 0.2s;
}

/*We will use ::before and ::after to draw the connectors*/
.tree-ltr li::before, .tree-ltr li::after{
    content: '';
    position: absolute; top: 0; right: 50%;
    border-top: 1px solid #ccc;
    width: 50%; height: 10px;

}
.tree-ltr li::after{
    right: auto; left: 50%;
    border-left: 1px solid #ccc;
}

/*We need to remove left-right connectors from elements without any siblings*/
.tree-ltr li:only-child::after, .tree-ltr li:only-child::before {
    display: none;
}

/*Remove space from the top of single children*/
.tree-ltr li:only-child{ padding-top: 0;}

/*Remove left connector from first child and right connector from last child*/
.tree-ltr li:first-child::before, .tree-ltr li:last-child::after{
    border: 0 none;
}

/*Adding back the vertical connector to the last nodes*/
.tree-ltr li:last-child::before{
    border-right: 1px solid #ccc;
    border-radius: 0 5px 0 0;
    -webkit-border-radius: 0 5px 0 0;
    -moz-border-radius: 0 5px 0 0;
}
.tree-ltr li:first-child::after{
    border-radius: 5px 0 0 0;
    -webkit-border-radius: 5px 0 0 0;
    -moz-border-radius: 5px 0 0 0;
}

/*Time to add downward connectors from parents*/
.tree-ltr ul ul::before{
    content: '';
    position: absolute; top: 0; left: 50%;
    border-left: 1px solid #ccc;
    width: 0; height: 10px;
}

.tree-ltr li a{
    border: 1px solid #ccc;
    padding: 3px;
    text-decoration: none;
    color: #666;
    font-family: arial, verdana, tahoma;
    font-size: 11px;
    display: inline-block;



    border-radius: 5px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;

    transition: all 0.2s;
    -webkit-transition: all 0.2s;
    -moz-transition: all 0.2s;
}

/*Time for some hover effects*/
/*We will apply the hover effect to the lineage of the element also*/
.tree-ltr li a:hover, .tree-ltr li a:hover+ul li a {
    background: #131826;
    color: #000;
    border: 1px solid #94a0b4;
}

/*Connector styles on hover*/
.tree-ltr li a:hover+ul li::after,
.tree-ltr li a:hover+ul li::before,
.tree-ltr li a:hover+ul::before,
.tree-ltr li a:hover+ul ul::before{
    border-color:  #94a0b4;
}

/*Thats all folks.*/