position fixed center horizontally code example
Example 1: center a fixed div horizontally
left: 50%;
transform: translateX(-50%);
Example 2: how to middle fixed element
position: fixed;
top: 0;
z-index: 100;
left: 50%;
transform: translateX(-50%);
Example 3: how to center a position fixed element horizontally
left: 50%;
margin-left: -400px; /* Half of the width */