body {
  max-width:400px;
  min-width:300px;
  font-family: Arial, sans-serif;
  --body-bg-color:#3b3b4f;
  background-color: var(--body-bg-color);;
  margin: 0 auto;
  padding: 0;
  
  justify-content: center;
  align-items: center;
  height: 100vh;
}

main {
  
  background-color: #000;
  border-radius: 20px;
  padding: 20px;
}

.freecodecamp-logo {
  display: block;
  margin: 0 auto;
  max-width: 150px;
}

h2 {
  color: #fff;
  text-align: center;
}

.phone-container {
  background-color: #222;
  border-radius: 15px;
  padding: 20px;
  margin-top: 20px;
}

.phone-background {
  background-color: #222;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}

.phone-screen {
  border: 2px solid #ccc;
}

label {
  color: #fff;
}

input {
  width: 100%;
  padding: 10px;
  margin-top: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
}



.phone-footer {
  display: flex;
  justify-content: space-between;
}

.phone-keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.phone-keypad>button{

  color: white;
  border: none;
  padding: 15px;
  text-align: center;
  text-decoration: none;
  font-size: 16px;
  cursor: pointer;
  border-radius: 5px;
}
.phone-keypad button:hover,.phone-keypad button:focus{
  opacity:0.9;
}
#check-btn{
  background-color: #4CAF50;
}

button[disabled]{
  opacity:0.7;background-color:grey;
}

button[disabled]:hover{
color:grey;
cursor: not-allowed;
}



#clear-btn {
  background-color: #ff3333;
}

#user-input {
  padding: 10px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

#results-div{
  margin: 10px 0;
  height:40px;
  color:white;
 
  /* background-color:pink */
}
#user-input,#results-div{
width: calc(100% - 10px);
}

footer{
  text-align:center;
  color:var(--body-bg-color);
}