body{
    font-family: Arial, sans-serif;
    background: #f0f4f8;
    margin:     0;
    padding:    40px;
}

.container{
    max-width:400px;
    margin:auto;
    background: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

h1 {
    text-align:center;
    color:  #333;
}

.input-group{
    display: flex;
    margin-bottom: 20px;
}

.input {
    flex:1;
    padding: 10px;
    font-size:16px;
}

button{
    padding: 10px 15px;
    font-size: 16px;
    background-color:#1d72b8;
    color:           white;
    border:none;
    cursor:pointer;   
}

button:hover{background-color: #155a8a;}

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

li{
    padding: 10px;
    background:   #e3f2fd;
    margin-bottom:  8px;
    border-radius:  6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

li button{
    background: crimson;
    padding: 5px 10px;
    border:  none;
    color:   white;
    font-size: 14px;
    cursor:pointer;
    border-radius: 4px;
}