style.css

body {
    min-height: 100vh;
    padding: 0;
    margin: 0;
    background: peru;
    color: white;
}

.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    min-width: 200px;
    max-width: 1000px;
    width: 80%;
    margin: 0 auto;
    font-family: monospace;
    font-size: 20px;
    line-height: 1.2;
}

.page__header {
    flex: 0 0;
    padding: 1em 0;
}

.page__main {
    flex: 1 0;
}

.page__footer {
    flex: 0 0;
    padding: 1em 0;
}

.form {
    border: 1px solid ivory;
    padding: 1em 1em 0;
}

.button {
    font-family: monospace;
    font-size: 20px;
    flex: 1 1 0px;
    margin: 0 0.5em 1em;
    display: block;
}

.form__section {
    padding: 0 0 1em;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
}

.form__section label {
    width:calc(25%);
    margin-right: 0.5em;
    white-space: nowrap;
    min-width: 200px;
    text-align: right;
}

.form__section input {
    margin-left: 0.5em;
    width:25%;
    min-width: 200px;
}

.submit {
    margin-right: 0.5em;
    width: 100px;
}

.reset {
    margin-left: 0.5em;
    width: 100px;
}