Update app.py

app.py

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+import streamlit as st
+import math
+
+# App title and configuration
+st.set_page_config(
+    page_title="Temperature Converter",
+    page_icon="🌡️",
+    layout="centered",
+    initial_sidebar_state="expanded"
+)
+
+# Custom CSS for a fancy look
+st.markdown(
+    """
+    <style>
+        .title {
+            font-size: 2.5em;
+            font-weight: bold;
+            color: #4CAF50;
+            text-align: center;
+        }
+        .subtitle {
+            font-size: 1.5em;
+            color: #2196F3;
+            text-align: center;
+        }
+        .math-box {
+            background-color: #f9f9f9;
+            border: 1px solid #ddd;
+            padding: 10px;
+            border-radius: 5px;
+        }
+    </style>
+    """,
+    unsafe_allow_html=True
+)
+
+# Title and subtitle
+st.markdown('<div class="title">🌡️ Temperature Converter 🌟</div>', unsafe_allow_html=True)
+st.markdown('<div class="subtitle">Convert temperatures between Celsius, Fahrenheit, and Kelvin</div>', unsafe_allow_html=True)
+
+# Sidebar for user input
+st.sidebar.header("Conversion Settings")
+input_unit = st.sidebar.selectbox("Select Input Unit:", ["Celsius (°C)", "Fahrenheit (°F)", "Kelvin (K)"])
+output_unit = st.sidebar.selectbox("Select Output Unit:", ["Celsius (°C)", "Fahrenheit (°F)", "Kelvin (K)"])
+input_value = st.sidebar.number_input("Enter Temperature Value:", value=0.0)
+
+# Conversion logic
+def convert_temperature(value, from_unit, to_unit):
+    if from_unit == to_unit:
+        return value
+    
+    # Convert input to Celsius first
+    if from_unit == "Celsius (°C)":
+        celsius = value
+    elif from_unit == "Fahrenheit (°F)":
+        celsius = (value - 32) * 5 / 9
+    elif from_unit == "Kelvin (K)":
+        celsius = value - 273.15
+    
+    # Convert from Celsius to target unit
+    if to_unit == "Celsius (°C)":
+        return celsius
+    elif to_unit == "Fahrenheit (°F)":
+        return celsius * 9 / 5 + 32
+    elif to_unit == "Kelvin (K)":
+        return celsius + 273.15
+
+# Perform conversion
+result = convert_temperature(input_value, input_unit, output_unit)
+
+# Display result
+st.markdown(f"### 🌟 Converted Temperature: **{result:.2f} {output_unit}**")
+
+# Display math formula
+st.markdown("#### 📚 Mathematical Formula")
+if input_unit == "Celsius (°C)" and output_unit == "Fahrenheit (°F)":
+    st.markdown('**F = (C × 9/5) + 32**')
+elif input_unit == "Fahrenheit (°F)" and output_unit == "Celsius (°C)":
+    st.markdown('**C = (F - 32) × 5/9**')
+elif input_unit == "Celsius (°C)" and output_unit == "Kelvin (K)":
+    st.markdown('**K = C + 273.15**')
+elif input_unit == "Kelvin (K)" and output_unit == "Celsius (°C)":
+    st.markdown('**C = K - 273.15**')
+elif input_unit == "Fahrenheit (°F)" and output_unit == "Kelvin (K)":
+    st.markdown('**K = (F - 32) × 5/9 + 273.15**')
+elif input_unit == "Kelvin (K)" and output_unit == "Fahrenheit (°F)":
+    st.markdown('**F = (K - 273.15) × 9/5 + 32**')
+
+# Footer
+st.markdown("---")
+st.markdown('Created with ❤️ using **Streamlit**')