diff --git a/fediverse-share-button/styles.css b/fediverse-share-button/styles.css
index 5d7be2d..0e4885c 100644
--- a/fediverse-share-button/styles.css
+++ b/fediverse-share-button/styles.css
@@ -24,7 +24,7 @@
 
 /* Styles based on the work of the getbootstrap.com team and contributors. */
 
-.input-group {
+.fsb-input-group {
   box-sizing: border-box;
   position: relative;
   display: flex;
@@ -34,7 +34,7 @@
   margin-bottom: 1rem !important;
 }
 
-.input-group-text {
+.fsb-input-group-text {
   box-sizing: border-box;
   display: flex;
   align-items: center;
diff --git a/fediverse-share-button/styles.min.css b/fediverse-share-button/styles.min.css
index 4282a6f..c71b140 100644
--- a/fediverse-share-button/styles.min.css
+++ b/fediverse-share-button/styles.min.css
@@ -1 +1 @@
-.fsb-prompt{max-width:500px;margin-top:52px}.fsb-prompt label{display:block;margin-bottom:12px}.fsb-icon{max-width:14px;margin-right:10px;vertical-align:text-top}.fsb-support-note{font-size:small}.fsb-d-none{display:none!important}.input-group{box-sizing:border-box;position:relative;display:flex;flex-wrap:wrap;align-items:stretch;width:100%;margin-bottom:1rem!important}.input-group-text{box-sizing:border-box;display:flex;align-items:center;padding:.375rem .75rem;font-size:1rem;font-weight:400;line-height:1.5;text-align:center;white-space:nowrap;background-color:var(--bs-tertiary-bg);border:1px solid silver;border-radius:8px;border-top-right-radius:0;border-bottom-right-radius:0}input{box-sizing:border-box;margin:0;font-family:inherit;scroll-margin-top:80px;scroll-margin-bottom:100px;display:block;padding:.375rem .75rem;font-size:1rem;font-weight:400;line-height:1.5;appearance:none;background-clip:padding-box;border:1px solid silver;border-left:none;position:relative;flex:1 1 auto;width:1%;min-width:0;border-top-right-radius:0;border-bottom-right-radius:0;margin-left:calc(var(--bs-border-width) * -1);border-top-left-radius:0;border-bottom-left-radius:0}button{box-sizing:border-box;margin:0;display:inline-block;padding:6px 12px;text-align:center;text-decoration:none;vertical-align:middle;border:1px solid silver;border-radius:8px;background-color:var(--bs-btn-bg);cursor:pointer;position:relative;z-index:2;margin-left:-1;border-top-left-radius:0;border-bottom-left-radius:0}
+.fsb-prompt{max-width:500px;margin-top:52px}.fsb-prompt label{display:block;margin-bottom:12px}.fsb-icon{max-width:14px;margin-right:10px;vertical-align:text-top}.fsb-support-note{font-size:small}.fsb-d-none{display:none!important}.fsb-input-group{box-sizing:border-box;position:relative;display:flex;flex-wrap:wrap;align-items:stretch;width:100%;margin-bottom:1rem!important}.fsb-input-group-text{box-sizing:border-box;display:flex;align-items:center;padding:.375rem .75rem;font-size:1rem;font-weight:400;line-height:1.5;text-align:center;white-space:nowrap;background-color:var(--bs-tertiary-bg);border:1px solid silver;border-radius:8px;border-top-right-radius:0;border-bottom-right-radius:0}input{box-sizing:border-box;margin:0;font-family:inherit;scroll-margin-top:80px;scroll-margin-bottom:100px;display:block;padding:.375rem .75rem;font-size:1rem;font-weight:400;line-height:1.5;appearance:none;background-clip:padding-box;border:1px solid silver;border-left:none;position:relative;flex:1 1 auto;width:1%;min-width:0;border-top-right-radius:0;border-bottom-right-radius:0;margin-left:calc(var(--bs-border-width) * -1);border-top-left-radius:0;border-bottom-left-radius:0}button{box-sizing:border-box;margin:0;display:inline-block;padding:6px 12px;text-align:center;text-decoration:none;vertical-align:middle;border:1px solid silver;border-radius:8px;background-color:var(--bs-btn-bg);cursor:pointer;position:relative;z-index:2;margin-left:-1;border-top-left-radius:0;border-bottom-left-radius:0}
diff --git a/index.html b/index.html
index a9ef863..eb845cb 100644
--- a/index.html
+++ b/index.html
@@ -72,8 +72,8 @@
   </article>
   <form class="fsb-prompt">
     <label>Share with the fediverse</label>
-    <div class="input-group mb-3">
-      <span class="input-group-text">https://</span>
+    <div class="fsb-input-group mb-3">
+      <span class="fsb-input-group-text">https://</span>
       <input required
         type="text"
         name="fediverse-domain"