styles.css

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;700&display=swap');

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Oswald', sans-serif;
    font-size: 20px;
}

body, section {
    background-color: #fff59d;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

h2 {
  font-size: 1.5rem;
}

.nav-links {
    background-color: #1b3039;
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 85px;
    padding: 5px 10%;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
}

html {
    scroll-behavior: smooth;
}

section[id] {
    scroll-margin-top: 85px;
}

section {
  margin-top: 1rem;
  width: 70%;
}

#matriz2x2 {
    margin-top: 5rem;
}

.nav-links {
    list-style: none;
}

.nav-links li{
    display: inline-block;
    padding: 0 20px;
}

.nav-links li:hover {
    transform: scale(1.1);
}

.nav-links a {
    font-size: 700;
    color: #eceff1;
    text-decoration: none;
}

.nav-links li a:hover{
    color: #ffbc0e;
}


.btn button{
    font-weight: 700;
    color: #1b3039;
    padding: 9px 25px;
    background: #eceff1;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease 0s;
    
}

.boton {
  margin: 1em;
  padding: .75em;
}

.limpiar {
  display: none;
}