DEMO at http://martinvelez.github.io
This is a minimalistic, responsive homepage.
One option is to use basic HTML and CSS to build your homepage. That is as lightweight as it gets.
I expect that most visitors will be using a small phone screen. Thus, your homepage should also be responsive. A responsive website resizes and reorganizes itself to different screen sizes. The easiest way I have found to make your site responsive is to use Bootstrap. First, the navigation bar automatically collapses. Second, the grid system automatically reorganizes as the screen shrinks.
MIT License
Copyright (c) [2016] [Martin Velez]
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.