Gave the images on the startpage a defined width

resources/less/metager/pages/start-page.less

@@ -75,6 +75,7 @@
             > a {
                 display: flex;
                 flex-direction: column;
+                align-items: center;
                 cursor: pointer;
                 color: inherit;
                 width: 268px;
@@ -84,6 +85,9 @@
                 @media(min-width: 552px){
                     margin: 0;
                 }
+                > img {
+                    width: 2.3em;
+                }
                 > div.teaser {
                     font-size: .7em;
                     text-align: justify;