* {
    box-sizing: border-box;
    background-color: cornflowerblue;
}
body,
input {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-size: 14px;
}
form { 
    background-color: blueviolet;
}
form, p {
    border: 2px solid black;
    padding: 5px;
}
p { 
    background-color: coral;
}
label {
    border: 1px dotted black;
    margin: 3px;
    padding: 3px;
    background-color: blueviolet;
}
#button {
    color: #fff;
    background-color: grey;
    border: 2px solid black;
    padding: 5px;
    margin: 5px;
   }
.error {
    color: red;
}