Nextgen Gallery all pictures arranged vertically

Have you tried floating them left?

.ngg-gallery-thumbnail-box {
 float: left;
}

@andrew I put my custom .css in my theme directory.
[Andrew Nevins says: I was talking to the OP]

@ Kiptain :

Have you made a custom nggallery.css in your theme directory ?

Otherwise just use the following, if you have a nggallery.css you can use the following but you’ll have to edit manually since the you won’t be able to alter the style via WordPress.

A .css in your theme directory take priority over the one in the nextgen-gallery/css

First off back up your nggallery.css file, located in :

/wp-content/plugins/nextgen-gallery/css

Then you can use :

Gallery->Style

Search for the following and change it to what I paste below :

.ngg-gallery-thumbnail {
/* float: left; sixx */
/* margin-right: 5px; sixx */
/* padding-top:10px; -sixx- row space in gallery */

height:86px;
margin:0pt 0pt 6px !important;
padding:0px 0pt 0pt 0px; /* -sixx- 12px 0pt 0pt 7px !important; */
padding-top:10px;
padding-bottom: 5px; /* -sixx- */
width:120px;
}

.ngg-gallery-thumbnail img {
background-color:#FFFFFF;
border:1px solid #A9A9A9;
display:block;
/* -sixx margin:4px 0px 4px 5px; */
margin-left: auto; /* -sixx- */
margin-right: auto; /* -sixx- */
padding:4px;
position:relative;
}

Good luck.