adding margin-left creates horizontal scroll bar to white space - html

Question

I'm writing the CSS for my site. I have text that I am putting on top of my background image. My HTML and CSS is below:
HTML
<header class="site-header">
<div class="site-header__menu-icon">
<div class="site-header__menu-icon__middle"></div>
</div>
<div class="site-header__menu-content">
<div class="site-header__btn-container">
Request A Demo
</div>
<nav class="primary-nav primary-nav--pull-right">
<ul>
<li>Home</li>
<li>Services</li>
<li>Why Us</li>
</ul>
</nav>
</div>
</div>
</header>
<div class="section">
<picture>
<img src="assets\images\pepper.jpg">
</picture>
<div>
<div class="section__text-content">
<h1 class="section__title">Company</h1>
<h3 class="section__sub-title">Company Slogan</h3>
<div class="btn-container">
<a class="btn" href="#">Talk To A Specialist</a>
<a class ="btn btn__white btn__pepper-white" href="#">Get A Quote</a>
</div>
</div>
</div>
</div>
CSS
.section {
position: relative;
max-width: 100%;
&__text-content {
position: absolute;
top: 30%;
width: 100%;
margin-left:
}
&__title {
font-size: 7rem;
font-weight: 300;
color: #ffffff;
margin-bottom: 0;
}
&__sub-title {
font-size: 2.5rem;
font-weight: 300;
margin-top: 3%;
margin-bottom: 2%;
color: #ffffff;
}
}
The problem arises when I try to add a margin-left to the .section class in my CSS, because then a blank which space to the right of my screen appears with a horizontal scroll bar in direct proportion to the amount of margin I specified to move to the left.
I know that I could use a simple "background-image" for my css, but I'd prefer to do it this way for responsive imaging (it's how I learned to do it and I'm on a bit of a time crunch).
Any suggestions?

Answer 1

FIXED
My problem was I was writing my margin in relative terms by doing:
.section__text-content {
position: absolute;
margin-left: 10%
}
Which is wrong, because the &__text-content is set to position: absolute
Percentage is relative position, with an absolutely positioned image you need absolute margins (i.e. pixels)