style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #464866;
    text-align: center;
}

header {
    text-align: center;
    padding: 20px;
    color: white;
}

main {
    margin: auto;
    display: flex;
    justify-content: center;  
}

.box {
    background-color: white;
    padding: 10px;
    margin: 0 10px 0 10px;
    width: 400px;
    height: 200px;
    border-radius: 5px;
    box-shadow: 2px 2px 2px 1px rgba(0, 0, 0, 0.356);
}

.input {
    display: block;
    width: 200px;
    height: 50px;
    margin: auto;
    margin-top: 10px;
    border-color: rgba(128, 128, 128, 0.192);
    border-radius: 5px;
}

input::placeholder {
    text-align: center;    
}

.btn {
    padding: 10px;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    color: white;
    background-color: #F45D01;
    border-radius: 5px;
    border: none;
    margin-top: 10px;
}

.btn:hover {
    cursor: pointer;
    padding: 11px;
}

footer {
    text-align: center;
    margin-top: 50px;
    color: white;
}

footer a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

footer a:hover {
    text-decoration: underline;
}