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

h1 {
    color: rgb(255, 255, 255);
    font-size: 60px;
    width: 100%;
    text-align: center;
    font-family: "Protest Guerrilla", sans-serif;
}

h2,
header,
#exercises {
    color: rgb(255, 255, 255);
    font-family: "Matemasie", sans-serif;
}

h3 {
    text-align: center;
    color: azure;
    font-family: "Matemasie", sans-serif;
}

h4 {
    text-align: left;
    color: azure;
    margin: 8px;
}

h6 {
    font-family: "Matemasie", sans-serif;
}

body {
    font-size: 30px;
    background-color: purple;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    min-height: 100%;
    height: 100%;
}

html {
    height: 100%;
}

#exercises a {
    display: block;
    padding: 0.25rem;
}

footer {
    width: 100%;
    background-color: rgba(0, 0, 0, 0.683);
    color: rgb(255, 255, 255);
    position: fixed;
    bottom: 0;
    text-align: left;
}

a:link,
a:visited {
    color: rgb(0, 187, 178);
}

a:hover,
a:focus {
    color: rgba(225, 0, 255, 0.849);
}

video {
    max-width: 100%;
    height: 300px;
    text-align: center;
}

figure iframe {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

img {
    height: 300px;
    width: 100%;
    aspect-ratio: 16/9;
}

#topnav {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    text-align: center;
    padding: 1.2rem 0;
    font-family: "Protest Guerrilla", sans-serif;
    background-color: black;
}

#Exercises {
    text-align: center;
    padding: 2rem 2rem;
    background-color: rgba(0, 0, 0, 0.377);
    gap: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
}

#videos {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding: 0 4rem;
    margin: 0 4rem;
}

/*Responsive*/
@media screen and (max-width: 1024px) {
    .wrapper {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 600px) {
    .wrapper {
        grid-template-columns: 1fr;
    }

    #Exercises {
        grid-template-columns: 1fr;
        padding: 0 1.2rem;
    }
}