body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background-color: lightgray;
  padding: 20px;
}

nav {
  display: flex;
  justify-content: space-between;
}

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

li {
  margin: 0 10px;
}

.nav-toggle-label {
  display: none;
  cursor: pointer;
}

input[type="checkbox"] {
  display: none;
}

.about-image {
  float: left;
  width: 50%;
}

.about-text {
  float: right;
  width: 50%;
}

/* Phone */
@media only screen and (max-width: 767px) {
  .nav-toggle-label {
    display: block;
    position: absolute;
    top: 10px;
    right: 20px;
  }

  ul {
    flex-direction: column;
    position: absolute;
    top: 60px;
    right: 20px;
    background-color: lightgray;
    padding: 20px;
    width: 80%;
  }

  li {
    margin: 10px 0;
  }

  .about-image,
  .about-text {
    width: 100%;
    float: none;
    text-align: center;
  }
}