.ht-tree {
line-height: 1.6;
padding:0;
}

.ht-tree li {
list-style-type:none;
font-size: 1.2rem;
}

.ht-tree input {
font-size: 1.4rem;
}

.ht-tree ul {
position:relative;
padding:0;
margin:0 0 0 1.5em;
}

.ht-tree ul::before {
content:"";
position:absolute;
top:0;
left:0;
height:100%;
border-left: 1px solid #333;
}

.ht-tree ul li {
list-style-type:none;
position: relative;
padding-left: 1.5em;

}

.ht-tree ul li::before {
content:"";
position: absolute;
top:0.7em;
left:0;
width: 1em;
border-top: 1px solid #333;
}

.ht-tree ul li:first-child {
padding: 0.8em 0 0 1.5em;
}

.ht-tree ul li:first-child::before {
top:1.4em;
padding-top: 1em;
}

.ht-tree ul li:last-child::before {
height:100%;
background-color: #FFF;
}