diff --git a/it4i_theme/header.html b/it4i_theme/header.html
index a6a9ed9275ef08555a136c09967f5ef419a9eeda..a0a11335e25cddaa1f955330a06561089a120fdd 100644
--- a/it4i_theme/header.html
+++ b/it4i_theme/header.html
@@ -23,10 +23,10 @@
       </div>
     </div>
       <div class="button button-twitter" role="button" aria-label="Twitter">
-        <a href="all.pdf" title="DOWNLOAD PDF VERSION" target="_blank"><img src="/img/download.png" width="25" height="25"></a>
+        <a href="all.pdf" title="DOWNLOAD PDF VERSION" target="_blank"><img src="/img/download.png" width="27" height="27"></a>
       </div>
       <div class="button button-github" role="button" aria-label="GitHub">
-        <a href="https://gitlab.it4i.cz/kru0052/docs.it4i" title="on GitLab" target="_blank" ><img src="/img/git.png" width="30" height="30"></a>
+        <a href="https://gitlab.it4i.cz/kru0052/docs.it4i" title="on GitLab" target="_blank" ><img src="/img/git.png" width="31" height="31"></a>
       </div>
     <div class="button button-search" role="button" aria-label="Search">
       <label class="toggle-button icon icon-search" title="Search" for="toggle-search"></label>