diff --git a/src/public/css/offers.css b/src/public/css/offers.css
index bef2a94..a7a3549 100644
--- a/src/public/css/offers.css
+++ b/src/public/css/offers.css
@@ -82,14 +82,15 @@
 
 #premium-content-area {
   width: 80%;
+  height: 50px;
+  align-items: center;
   margin-left: auto;
   margin-right: auto;
   display: flex;
 }
 
 #premium-selector-area {
-  width: 23%;
-  margin-left: 0;
+  margin-left: auto;
   margin-right: 5%;
   display: flex;
 }
@@ -130,8 +131,19 @@
 
 #premium-price-display-area {
   margin-left: 0;
-  margin-right: 0;
-  width: 70%;
+  margin-right: auto;
+  font-size: 1em;
+  text-align: start;
+}
+
+#premium-price-display-area > * {
+  margin-top: 0;
+  margin-bottom: 0;
+}
+
+#market-price-paragraph {
+  color: gray;
+  font-size: 0.8em;
 }
 
 #amount-area-content {
@@ -190,6 +202,10 @@
   width: 2em;
 }
 
+#at-least-one-checkbox {
+  color: red;
+}
+
 #submit-button-area {
   margin-top: 1em;
   margin-bottom: 1em;
diff --git a/src/public/javascript/offers.js b/src/public/javascript/offers.js
index 3f974bc..8d0104c 100644
--- a/src/public/javascript/offers.js
+++ b/src/public/javascript/offers.js
@@ -137,6 +137,7 @@ eurAmountInput.addEventListener('blur', () => {
 
 eurAmountInput.addEventListener('input', () => {
   eurAmountInput.value = eurAmountInput.value.replace(/[^0-9]/g, '');
+  updateBtcInput();
 });
 
 for (const btcMethodCheckbox of btcMethodCheckboxes) {
diff --git a/src/views/offers.ejs b/src/views/offers.ejs
index 04f81b3..f8928e9 100644
--- a/src/views/offers.ejs
+++ b/src/views/offers.ejs
@@ -54,10 +54,11 @@
               </div>
             </div>
             <div id="premium-price-display-area">
-              <p>
+              <p id="offer-price-paragraph">
                 Tu precio: <span id="offer-price">90 000</span>€/BTC
-                <span>(Precio mercado: <span>83 000</span>€/BTC)</span>
+                <span>
               </p>
+              <p id="offer-price-paragraph">(Precio mercado: <span>83 000</span>€/BTC)</span></p>
             </div>
           </div>
         </div>
@@ -69,9 +70,9 @@
                 id="input-eur-amount"
                 type="text"
                 class="money-input input-money-amount"
+                placeholder="100"
                 required
-              /><!--
-              -->
+              />
               <div id="eur-symbol" class="curr-symbol">
                 <span id="eur-character" class="curr-character">€</span>
               </div>
@@ -82,8 +83,7 @@
                 type="text"
                 class="money-input input-money-amount"
                 disabled
-              /><!--
-              -->
+              />
               <div id="sats-symbol" class="curr-symbol">
                 <span id="sats-character" class="curr-character">SAT</span>
               </div>