<form type='POST'>
<input type='text' name='textbox' placeholder='Team Flask...' />
</form>
Put a div around the box (or use the id / class of the one you already have) and call the box id / class in css and use margin-left
Example:
#myDiv{
margin-left:250px;
}
Or if you want it centered in the page, try:
#myDiv{
width:250px;
width: 700px ;
margin-left: auto ;
margin-right: auto ;
}