Short Lines Either Side Text - html

Question

Using CSS and HTML there are a load of answers for adding a line either side of some text but these lines always fill the full width of the container. I only want these lines to be 150px in length either side of the text like this:
The text will be dynamic so may change in length and needs to be centred.
Here is some jsfiddle code I have been working on:
https://jsfiddle.net/vh0j4q1e/
<div id="container">
TEXT HEADING
#container {
width:800px;
text-align:center;
background-color:#ccc;
}
h1 {
position: relative;
font-size: 30px;
z-index: 1;
overflow: hidden;
text-align: center;
}
h1:before, h1:after {
position: absolute;
top: 51%;
overflow: hidden;
width: 50%;
height: 3px;
content: '';
background-color: red;
}
h1:before {
margin-left: -50%;
text-align: right;
}
Can anyone help improve this code so the lines appear as per the image above?

Answer 1

You could use Flexbox here
h2 {
display: flex;
align-items: center;
justify-content: center;
text-transform: uppercase;
}
h2:after, h2:before {
content: '';
width: 150px;
height: 2px;
background: red;
margin: 0 10px;
}
<h2>Lorem ipsum</h2>

Answer 2

And if you don't want to use Flexbox, you could do it by making h1 an inline-block then offsetting the :before -150px to the left and :after to 100% left
#container {
width:800px;
text-align:center;
background-color:#ccc;
margin:0 auto;
}
h1 {
position: relative;
font-size: 30px;
display: inline-block;
padding:0 15px;
}
h1:before, h1:after {
position: absolute;
top: 50%;
width: 150px;
height: 3px;
content: '';
background-color: red;
left:-150px;
}
h1:after {
left: 100%;
}
<div id="container">
<h1>TEXT HEADING</h1>
</div>
https://jsfiddle.net/azizn/vh0j4q1e/1/

Answer 3

Here's another approach. I haven't tested it very much, but it should be pretty cross-browser
#container {
width:800px;
max-width: 100%;
text-align:center;
background-color:#ccc;
}
h1 {
position: relative;
font-size: 30px;
z-index: 1;
overflow: hidden;
text-align: center;
}
h1:before, h1:after {
content: '';
width: 150px;
height: 3px;
display:inline-block;
background-color: red;
vertical-align: 0.3em;
margin: 0 -100%;
}
h1:before {
margin-right: 0.75em;
}
h1:after {
margin-left: 0.75em;
}
}
<div id="container">
<h1>TEXT HEADING</h1>
</div>

Answer 4

Here, I've both wrapped it in another DIV for centering AND gave the title a little more space (a la the example):
https://jsfiddle.net/vh0j4q1e/
<div align="center">
<div id="container">
<h1>TEXT HEADING</h1>
</div>
</div>
#container {
width:800px;
text-align:center;
background-color:#ccc;
}
h1 {
position: relative;
font-size: 30px;
z-index: 1;
overflow: hidden;
text-align: center;
}
h1:before, h1:after {
margin: 0px 0px 0px 15px;
position: absolute;
top: 51%;
overflow: hidden;
width: 50%;
height: 3px;
content: '';
background-color: red;
}
h1:before {
margin-left: -52%;
text-align: right;
}