Install node-sass on CentOS 6

1-node-sass-centos-6.sh

yum update
yum install -y gcc-c++ make
curl -sL https://rpm.nodesource.com/setup_8.x | sudo -E bash -
npm install --unsafe-perm -g node-sass
type node-sass
npm install -g less
type lessc

2-test.sh

lessc test.less test-less.css
node-sass test.scss test-scss.css

test.less

@blue: #3bbfce;
@margin: 16px;

.content-navigation {
  border-color: @blue;
  color: darken(@blue, 9%);
}

.border {
  padding: @margin / 2;
  margin: @margin / 2;
  border-color: @blue;
}

test.scss

$blue: #3bbfce;
$margin: 16px;

.content-navigation {
  border-color: $blue;
  color: darken($blue, 9%);
}

.border {
  padding: $margin / 2;
  margin: $margin / 2;
  border-color: $blue;
}