body{
font-family: Arial;
background:#f4f4f4;
display:flex;
justify-content:center;
align-items:center;
height:100vh;
}

.container{
background:white;
padding:30px;
border-radius:10px;
box-shadow:0 0 10px gray;
text-align:center;
}

input{
padding:10px;
margin:10px;
width:200px;
}

button{
padding:10px 15px;
margin:5px;
background:#4CAF50;
color:white;
border:none;
cursor:pointer;
}

ul{
list-style:none;
padding:0;
}

li{
padding:10px;
margin:5px;
background:#eee;
display:flex;
justify-content:space-between;
}