Alter max-screen width

Alter the screen width values to get closer to
 the original SciPost design.

scipost/static/scipost/assets/config/preconfig.scss

@@ -2,6 +2,19 @@
 //
 //
 
+// Grid
+//
+$grid-gutter-width-base: 20px;
+$container-max-widths: (
+  sm: 546px,
+  md: 738px,
+  lg: 962px,
+  xl: 1170px
+);
+.row {
+    margin-bottom: 1rem;
+}
+
 // Colors
 //
 $scipost-lightblue: #6884C2 !default;

scipost/static/scipost/assets/css/style.scss

@@ -80,6 +80,7 @@ h1, h2, h3, h4, h5, h6 {
 }
 .navbar-brand {
     height: 38px;
+    margin: 0;
 }
 .navbar-toggler-icon {
     background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(0, 43, 73, 1.0)");

scipost/templates/scipost/index.html

@@ -4,7 +4,7 @@
 
 {% block bodysup %}
 
-<div class="container-fluid">
+<div class="container">
     <div class="row">
         {% if latest_newsitems %}
         <div class="col-md-6 {% if user.is_authenticated %}col-lg-4{% else %}col-lg-3{% endif %}">
@@ -123,7 +123,7 @@
 </div>
 
 
-<div class="container-fluid">
+<div class="container">
     <hr class="hr12">
     <div class="row">
         <div class="col-md-6">