Dimmer vertical align missing

[mic159]

In semantic.yeti.min.css appears to be missing a style.

Its there on your example site: http://semantic-ui-forest.com/themes/bootswatch/yeti/#dimmer
But in this github repo, its missing:

forest-themes-css/dist/bootswatch/semantic.yeti.min.css

Line 260 in 2a7e5d0

*/.dimmable:not(body){position:relative}.ui.dimmer{display:none;position:absolute;top:0!important;left:0!important;width:100%;height:100%;text-align:center;vertical-align:middle;padding:1em;background-color:rgba(0,0,0,.85);opacity:0;line-height:1;-webkit-animation-fill-mode:both;animation-fill-mode:both;-webkit-animation-duration:.5s;animation-duration:.5s;-webkit-transition:background-color .5s linear;transition:background-color .5s linear;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:column;flex-direction:column;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;will-change:opacity;z-index:1000}.ui.dimmer>.content{-webkit-user-select:text;-moz-user-select:text;-ms-user-select:text;user-select:text;color:#fff}.ui.segment>.ui.dimmer{border-radius:inherit!important}.ui.dimmer:not(.inverted)::-webkit-scrollbar-track{background:rgba(255,255,255,.1)}.ui.dimmer:not(.inverted)::-webkit-scrollbar-thumb{background:rgba(255,255,255,.25)}.ui.dimmer:not(.inverted)::-webkit-scrollbar-thumb:window-inactive{background:rgba(255,255,255,.15)}.ui.dimmer:not(.inverted)::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.35)}.animating.dimmable:not(body),.dimmed.dimmable:not(body){overflow:hidden}.dimmed.dimmable>.ui.animating.dimmer,.dimmed.dimmable>.ui.visible.dimmer,.ui.active.dimmer{display:-webkit-box;display:-ms-flexbox;display:flex;opacity:1}.ui.disabled.dimmer{width:0!important;height:0!important}.ui[class*="top aligned"].dimmer{-webkit-box-pack:start;-ms-flex-pack:start;justify-content:flex-start}.ui[class*="bottom aligned"].dimmer{-webkit-box-pack:end;-ms-flex-pack:end;justify-content:flex-end}.ui.page.dimmer{position:fixed;-webkit-transform-style:'';transform-style:'';-webkit-perspective:2000px;perspective:2000px;-webkit-transform-origin:center center;transform-origin:center center}body.animating.in.dimmable,body.dimmed.dimmable{overflow:hidden}body.dimmable>.dimmer{position:fixed}.blurring.dimmable>:not(.dimmer){-webkit-filter:blur(0) grayscale(0);filter:blur(0) grayscale(0);-webkit-transition:.8s -webkit-filter ease;transition:.8s -webkit-filter ease;transition:.8s filter ease;transition:.8s filter ease,.8s -webkit-filter ease}.blurring.dimmed.dimmable>:not(.dimmer){-webkit-filter:blur(5px) grayscale(.7);filter:blur(5px) grayscale(.7)}.blurring.dimmable>.dimmer{background-color:rgba(0,0,0,.6)}.blurring.dimmable>.inverted.dimmer{background-color:rgba(255,255,255,.6)}.ui.dimmer>.top.aligned.content>*{vertical-align:top}.ui.dimmer>.bottom.aligned.content>*{vertical-align:bottom}.ui.inverted.dimmer{background-color:rgba(255,255,255,.85)}.ui.inverted.dimmer>.content>*{color:#fff}.ui.simple.dimmer{display:block;overflow:hidden;opacity:1;width:0%;height:0%;z-index:-100;background-color:rgba(0,0,0,0)}.dimmed.dimmable>.ui.simple.dimmer{overflow:visible;opacity:1;width:100%;height:100%;background-color:rgba(0,0,0,.85);z-index:1}.ui.simple.inverted.dimmer{background-color:rgba(255,255,255,0)}.dimmed.dimmable>.ui.simple.inverted.dimmer{background-color:rgba(255,255,255,.85)}/*!

Check semantic.yeti.min.css line 260, this style is missing:

.ui.dimmer>.content>*{display:table-cell;vertical-align:middle;color:#fff}