Added special suppitem case (fix #8)

frontend/components/item/Box.vue

@@ -1,12 +1,13 @@
 <script lang="ts" setup>
 defineProps<{
     title: string,
-    bootsFirst?: number
+    bootsFirst?: number,
+    sizePerc?: number
 }>()
 </script>
 
 <template>
-<div class="item-box">
+<div :style="(sizePerc != undefined && sizePerc != null) ? 'max-height: ' + (sizePerc * 600) + 'px;' : ''" class="item-box">
     <div style="display:flex; flex-direction: column; justify-content: center; align-items: center;">
         <h2 class="item-box-title">{{ title }}</h2>
         <h5 v-if="bootsFirst != undefined && bootsFirst != null"