General CSS
Consistent and Minimal
  Most important rules:
  Be consistent.
  Be minimal.
  Use tools.
  Read these sections carefully.
React
Scope
Write CSS per component.
    let Btn = props=>
        {props.children};
    let Contact_link = props=>
        {props.children};
    let Btn = props=>{props.children};
    let Contact_link = props=>;
    .btn {
        color: @dark_blue;
    }
Keep the same syling wherever the component is used: don't nest component
  CSS inside a different component.
    .main_page {
        .btn {
            color: @white;
        }
    }
    .main_page {
        color: @white;
    }
    .btn {
        color: @dark_blue;
        .btn-main {
            color: @white;
        }
    }
Flat
  Make all component CSS global. A component should look the same in on any
  page in and inside any other component.
    .main_page {
        .btn {
            color: @dark_blue;
        }
    }
    .btn {
        color: @dark_blue;
    }
  Nest component sub-classes inside the component less to group the
  definitions together.
    .btn {
        padding: 5px;
    }
    .btn-text {
        color: @dark_blue;
    }
    .btn {
        padding: 5px;
        .btn-text {
            color: @dark_blue;
        }
    }
  Inside a component's class keep it flat - only one level of nesting.
    .btn {
        padding: 5px;
        .btn-left {
            float: left;
            .btn-text {
                color: @dark_blue;
            }
        }
    }
    .btn {
        padding: 5px;
        .btn-left {
            float: left;
        }
        .btn-text {
            color: @dark_blue;
        }
    }
Naming
Use Unix notation for naming
    .startButton {
        color: @white;
    }
    .start-button {
        color: @white;
    }
    .start_button {
        color: @white;
    }
Use the same name as the react component
    let Btn = props=>
        {props.children};
    let Btn = props=>
        {props.children};
Use parent class name to prefix inner class names to pervent collisions.
    .btn {
        .text {
              color: @white;
        }
    }
    .btn {
        .btn-text {
              color: @white;
        }
    }
Use dash "-" as a delimiter between prefixes.
    .btn {
        .btn_text {
              color: @white;
        }
    }
    .btn {
        .btn-text {
              color: @white;
        }
    }
Use "sc_" as a prefix for sections.
    let Many_ips = props=>;
    let Many_ips = props=>;
Do not use "ad-" prefix for class names. Such items can be removed by ad
  blockers. Check that your code works with the ad blockers enabled.
    .ad-text {
        color: @white;
    }
    .item-text {
        color: @white;
    }
HTML
TBD