To horizontally center a block element (like <div>), use margin: auto;
Setting the width of the element will prevent it from stretching out to the edges of its container.
The element will then take up the specified width, and the remaining space will be split equally between the two margins. Continue reading CSS Layout – Align
Compared to display: inline, the major difference is that display: inline-block allows to set a width and height on the element.
Also, with
display: inline-blockdisplay: inline they are not.
Compared to display: block, the major difference is that display: inline-block does not add a line-break after the element, so the element can sit next to other elements.
The following example shows the different behavior of display: inline, display: inline-block and display: block:
span.a {
display: inline; /* the default for span */
width: 100px;
height: 100px;
padding: 5px;
border: 1px solid blue;
background-color: yellow;
}
span.b {
display: inline-block;
width: 100px;
height: 100px;
padding: 5px;
border: 1px solid blue;
background-color: yellow;
}
span.c {
display: block;
width: 100px;
height: 100px;
padding: 5px;
border: 1px solid blue;
background-color: yellow;
}