Multiple options in codings

Multiple options in website developments:

For web page refresh methods:

1. using metatag refresh
2. using javascript

For form submit:

1. using input
2. using button
3. using image button control in asp.net
4. using a tag

--> For align center position in css:

1. using margin
2. using position, left & top (position: absolute;left: 50%;top: 50%;)
3. using box model (display:box; box-pack:center; box-align:center;)
4. using flex model (display: flex; flex-direction: row; flex-wrap: wrap; justify-content: center; align-items: center;)

For hacking:

1. using widgets
2. using HTML5 local storage
3. using external javascripts