body{
    font-family:Arial;
    background:#f4f4f4;
    margin:0;
}

header{
    background:#3498db;
    color:white;
    padding:30px;
    text-align:center;
}

footer{
    text-align:center;
}

main{
    max-width:900px;
    margin:auto;
    padding:20px;
}

section{
    background:white;
    padding:20px;
    border-radius:10px;
}

input{
    width:100%;
    padding:10px;
    margin-bottom:15px;
    box-sizing:border-box;
}

button{
    padding:10px 20px;
    border:none;
    border-radius:5px;
    cursor:pointer;
}

.btn{
    background:#3498db;
    color:white;
}

.btn-delete{
    background:#e74c3c;
    color:white;
}

li{
    background:#eee;
    margin:10px 0;
    padding:15px;
    border-radius:5px;

    display:flex;
    justify-content:space-between;
}