aligning sub menu with the main menu - html

Question

My sub-menu and sub-sub-menu seem to have a lot of gap from each other and is not aligned with the main menu. I want the sub-menu to drop down straight from the main menu and sub-sub-menu to open up on the right side of the sub-menu when hovered over. How can I do that?
below are my codes:
.nav-bar {
max-height: 0;
margin-left: 0;
padding-left:20px;
padding-top: 200px;
}
.box-nav-bar ul{
display:inline-block;
text-decoration: none;
padding: 0;
list-style-type: none;
margin:0;
}
.box-nav-bar ul li{
display: inline-block;
padding: 20px;
border: 1px solid grey;
width: 100px;
height: 50px;
line-height: 50px;
text-align: center;
position: relative;
}
.box-nav-bar ul li a{
text-decoration: none;
list-style: none;
color: black;
font-size: 18px;
font-weight: bold;
font-family: Arial;
display:block;
}
.box-nav-bar ul li:hover{
background-color: grey;
}
.box-nav-bar ul .sub-menu ul li{
text-decoration: none;
padding: 0;
margin: 0;
list-style-type: none;
width: 150px;
}
.box-nav-bar ul .sub-menu {
display: none;
font-size: 14px solid;
position:absolute;
text-align: center;
}
.box-nav-bar li:hover .sub-menu{
display: block;
}
.sub-sub-menu{
display: none;
font-size: 14px solid;
position:absolute;
text-align: center;
}
.box-nav-bar li:hover .sub-menu li:hover{
display: block;
}
<div class="nav-bar">
<nav class="box-nav-bar">
<ul>
<li> HOME</li>
<li> ABOUT</li>
<li> SERVICES
<ul class="sub-menu">
<li>
Lorem ipsum
</li>
<li>
Dolor sit amet
</li>
<li>
Conse ctetur
<ul class="sub-sub-menu">
<li>
Latest
</li>
<li>
Archive
</li>
</ul>
</li>
</ul>
</li>
<li> PROJECTS</li>
<li> CONTACTS</li>
</ul>
</nav>
</div>
Thank you.

Answer 1

You have position: absolute on your .sub-menu and .sub-sub-menu. You just have to align your container blocks using the top and left properties.
Also font-size: 14px solid is invalid as solid is a border-type attribute and not required with font-size. Change it simply to font-size: 14px.
Refer code:
.nav-bar {
max-height: 0;
margin-left: 0;
padding-left: 20px;
padding-top: 200px;
}
.box-nav-bar ul {
display: inline-block;
text-decoration: none;
padding: 0;
list-style-type: none;
margin: 0;
}
.box-nav-bar ul li {
display: inline-block;
padding: 20px;
border: 1px solid grey;
width: 100px;
height: 50px;
line-height: 50px;
text-align: center;
position: relative;
}
.box-nav-bar ul li a {
text-decoration: none;
list-style: none;
color: black;
font-size: 18px;
font-weight: bold;
font-family: Arial;
display: block;
}
.box-nav-bar ul li:hover {
background-color: grey;
}
.box-nav-bar ul .sub-menu ul li {
text-decoration: none;
padding: 0;
margin: 0;
list-style-type: none;
width: 150px;
}
.box-nav-bar ul .sub-menu {
display: none;
font-size: 14px;
position: absolute;
text-align: center;
top: 91px;
left: 0;
}
.box-nav-bar li:hover .sub-menu {
display: block;
}
.sub-sub-menu {
display: none;
font-size: 14px;
position: absolute;
text-align: center;
top: 0px;
left: 140px;
}
.box-nav-bar li:hover .sub-menu li:hover {
display: block;
}
<div class="nav-bar">
<nav class="box-nav-bar">
<ul>
<li> HOME</li>
<li> ABOUT</li>
<li> SERVICES
<ul class="sub-menu">
<li>
Lorem
</li>
<li>
Dolor
</li>
<li>
Conse
<ul class="sub-sub-menu">
<li>
Latest
</li>
<li>
Archive
</li>
</ul>
</li>
</ul>
</li>
<li> PROJECTS</li>
<li> CONTACTS</li>
</ul>
</nav>
</div>

Answer 2

This will help you get started.
.nav-bar {
max-height: 0;
margin-left: 0;
padding-left: 20px;
padding-top: 200px;
}
.box-nav-bar ul {
display: inline-block;
text-decoration: none;
padding: 0;
list-style-type: none;
margin: 0;
}
.box-nav-bar ul li {
display: inline-block;
padding: 20px;
border: 1px solid grey;
width: 100px;
height: 50px;
line-height: 50px;
text-align: center;
position: relative;
}
.box-nav-bar ul li a {
text-decoration: none;
list-style: none;
color: black;
font-size: 18px;
font-weight: bold;
font-family: Arial;
display: block;
}
.box-nav-bar ul li:hover {
background-color: grey;
}
.box-nav-bar ul .sub-menu ul li {
text-decoration: none;
padding: 0;
margin: 0;
list-style-type: none;
width: 150px;
}
.box-nav-bar ul .sub-menu {
display: none;
font-size: 14px solid;
position: absolute;
text-align: center;
left: 0;
top: 100%;
}
.box-nav-bar li:hover .sub-menu {
display: block;
}
.sub-menu li {
width: 100% !Important;
}
.sub-menu li:hover .sub-sub-menu {
display: block !important;
}
.sub-sub-menu {
display: none !important;
font-size: 14px solid;
position: absolute;
text-align: center;
top: -2px;
left: 100%;
}
.box-nav-bar li:hover .sub-menu li:hover {
display: block;
}
.sub-sub-menu li {
width: 100% !important;
display: block !important;
padding: 20px !important;
}
<div class="nav-bar">
<nav class="box-nav-bar">
<ul>
<li> HOME</li>
<li> ABOUT</li>
<li> SERVICES
<ul class="sub-menu">
<li>
Lorem ipsum
</li>
<li>
Dolor sit amet
</li>
<li>
Conse ctetur
<ul class="sub-sub-menu">
<li>
Latest
</li>
<li>
Archive
</li>
</ul>
</li>
</ul>
</li>
<li> PROJECTS</li>
<li> CONTACTS</li>
</ul>
</nav>
</div>