The container mixin and class limit content to the max width configured by the $container variable, using the $gutter variable by default for left and right padding.
<div class="container">
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</div>
///
/// container mixin
///
@mixin container($max-width: $container, $h-padding: $gutter) {
margin-left: auto;
margin-right: auto;
max-width: $max-width;
padding-left: $h-padding;
padding-right: $h-padding;
position: relative;
}
.container {
@include container;
}