containing width of small media box image

opentech/static_src/src/sass/components/_media-box.scss

@@ -45,6 +45,7 @@
             position: absolute;
             top: 50%;
             left: 50%;
+            max-width: 105px;
             border: 0 solid;
             transform: translate(-50%, -50%);
             transition: border $transition;