estilos.css

.colores {
    --fondo: #9cf3ff;
    --principal: #085f03;
    --texto: #03683b;
    --texto_claro: #a0ffd4;
    --footer: #004223;
}

body {
    font-family: sans-serif;
    margin: 0;
    display: flex;
    align-items: center;
    flex-direction: column;
    min-height: 100dvh;
    background-color: var(--fondo);
}

div, body, header, section, aside, nav, ul, footer {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.header {
    width: 100%;
    height: 25dvh;
}

.header img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.section {
    margin: auto 12px;
    width: 70%;
}

.titulo {
    text-align: center;
    font-size: 2rem;
    margin: 16px;
}

.fieldset {
    border: 2px solid var(--principal);
    border-radius: 12px;
    padding: 8px;
    margin: 12px;
}

.fieldset legend {
    color: var(--texto);
    font-weight: 400;
}


#controlador div {
    display: grid;
    grid-template-columns: 100px auto 100px auto 100px;
    justify-content: center;
    align-items: center;
    gap: 4px;
}


.footer {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 12px 20px;
    width: 100%;
    background-color: var(--footer);
    color: var(--texto_claro);
}

.firma {
    align-self: self-start;
    margin: 0;
}