* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

img {
  max-width: 100%;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

p {
  margin: 0;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
}

button, input {
  background: none;
  border: none;
  padding: 0;
}

/* header.css */
header {
    background-color: #FCFCFA;
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
}

header > img {
    width: 10vw;
    margin: 1em;
}