* {
    margin: 0;
    padding: 0;
    font-family: "Arial";
    color: #454545;
}

body {
    max-width: 100%;
}

ul {
    line-height: 1.6rem;
    font-size: 1rem;
    margin: initial;
    padding-left: 40px;
    
    margin-bottom: 0.6rem;
    margin-top: -1rem;
}

h1 {
    font-size: 2.2em;
}
h2 {
    font-size: 1.8em;
}
h3 {
    font-size: 1.4em;
}
h4 {
    font-size: 1em;
}

p {
    line-height: 1.2em;
    margin-bottom: 1.2em;
    font-size: 1em;
}

main {
    background-color: #EEEEEE;
}

.container {
    margin: 0 auto;
    padding: 15px;
    max-width: 768px;
    display: block;
}

header {
    border-bottom: 1px solid darkgray;
    padding: 10px 0;
    display: flex !important;
    justify-content: space-between;
    flex-wrap: wrap;
}

@media (max-width:767px) {
    header {
        flex-direction: column-reverse;
    }
}

footer {
    border-top: 1px solid darkgray;
    padding: 10px 0;
    display: flex;
    justify-content: space-between;
}

img {
    border: 1px solid darkgray;
    border-radius: 15px;
}