small styling tests

lootalot_front/src/components/Chest.vue

@@ -2,7 +2,7 @@
   <div class="container">
     <div v-show="mainControlsDisplayed" class="buttons is-right">
       <button v-if="canAdd" 
-          class="button is-medium is-inverted is-info"
+          class="button is-inverted is-info"
           @click="is_adding = true"
           >
           <span class="icon">
@@ -10,7 +10,7 @@
             </span>
           <p>Nouveau loot</p>
         </button>
-      <button class="button is-medium is-inverted is-primary">
+      <button class="button is-inverted is-primary">
         <span class="icon">
           <i class="fas fa-coins"></i>
           </span>