:root {
    --color-1: #35858E;
    --color-2: #7DA78C;
    --color-3: #C2D099;
    --color-4: #E6EEC9;
    --color-blanco: #FFFFFF;
}

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

body{
    background-color: var(--color-4);
    color: var(--color-1);
    font-family: Arial, Helvetica, sans-serif;
}

header{
    background-color: var(--color-1);
    color: var(--color-blanco);
}

header nav ul{
    list-style: none;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    padding: 15px;
    justify-items: center;
}

header nav ul li a{
    text-decoration: none;
    color: var(--color-blanco);
    font-size: 1.3rem;
}

header nav ul li a:hover{
    color: var(--color-3);
    text-decoration: underline;
}

main{
    background-color: var(--color-blanco);
    width: 80%;
    margin: auto;
    margin-top: 20px;
    margin-bottom: 20px;
    padding: 20px;
    border-radius: 10px;
}

#datos_alumnos{
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: auto;
    background-color: var(--color-2);
    color: var(--color-blanco);
    padding: 25px;
    border-radius: 10px;
}

#datos_alumnos input{
    padding: 6px;
    border: none;
    border-radius: 3px;
}

#preguntas{
    display: grid;
    grid-template-columns: 4fr 2fr;
    gap: 20px;
}

#preguntas img{
    width: 100%;
    height: auto;
}