*{
    box-sizing: border-box;
}

body{
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}


.content{
    display: flex;
    border: 2px solid black;
    border-radius: 10px;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    width: 300px;
}

.content input{
    padding: 10px 20px;
    background-color: white;
    border: 1px solid black;
    text-align: center;
}



h1{
    background-color: black;
    margin-top: 0;
    color: white;
    text-align: center;
    font-family: sans-serif;
}

button{
    border: none;
    padding: 10px 20px;
    background-color: black;
    color: white;
    cursor: pointer;
    margin-bottom: 10px;
    border-radius: 3px;
}