body {font-family: Arial, Helvetica, sans-serif;}

form{
    border: 3px solid #f1f1f1;
    padding: 12px;
}

input[type=text], input[type=password]{
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    box-sizing: border-box;
}

button{
    background-color: blue;
    color: white;
    padding: 14px 20px;
    margin: 8px 0;
    border: none;
    cursor: pointer;
    width: 100%;
}
button:hover{
    opacity: 80%;
}

.container{
    width: 300px;
    padding: 16px;
}