Fixed some responsive issues

src/components/MastodonForm.vue

@@ -2,7 +2,7 @@
 
   <form @submit.prevent="submit">
     <div class="row">
-      <div class="input-field col s12">
+      <div class="input-field col s12 l6">
         <input v-model="domain" id="domain" placeholder="mastodon.server" type="text" class="validate">
         <label class="active" for="domain">Mastodon domain</label>
       </div>

src/components/Suggestions.vue

@@ -28,7 +28,7 @@
       </button>
     </h2>
     <div class="row">
-      <div class="input-field col s3">
+      <div class="input-field col l3">
         <input v-model="maxDays" id="maxDays" placeholder="60" type="number" min="1" step="5" max="365" class="validate">
         <label class="active" for="maxDays">Period (in days)</label>
       </div>

src/views/Connect.vue

@@ -2,7 +2,7 @@
   <div>
     <h2>Available sources</h2>
     <div class="row">
-      <div class="col s4"  v-for="source in sources" :key="source.id">
+      <div class="col l4"  v-for="source in sources" :key="source.id">
         <div class="card">
           <div :class="['card-image', source.imageBackground]">
             <img :src="source.getLogo()">