Position CSS

What is the position property in CSS?

The CSS position property determines how an element is positioned in the document. It directly shapes how the element interacts with the page flow and with other elements. It is one of the most fundamental — and most misunderstood — properties in CSS, yet mastering it is essential for any advanced layout.

The 5 position values

static is the default: the element follows the normal flow. relative shifts an element from its initial position without affecting the others. absolute removes the element from the flow and positions it against its nearest positioned ancestor. fixed pins the element to the viewport (sticky navigation, modals). sticky combines relative and fixed — the element behaves normally until a scroll threshold is reached.

Position and z-index

Only positioned (non-static) elements can use z-index to control stacking. That is why position and z-index are so tightly linked when managing an interface's visual layers.

Conclusion

The position property is a pillar of CSS. Understanding the difference between static, relative, absolute, fixed and sticky lets you build complex layouts and place every element of an interface precisely.