index.css

@import url("https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,500;1,200&display=swap");
* {
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}
body {
  padding: 0;
  margin: 0;
}
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgb(14, 14, 39);
  color: #fff;
}
.logo {
  font-size: 1.5rem;
  margin: 0.5rem;
  cursor: pointer;
}
.navlinks ul {
  display: flex;
  margin: 0;
  padding: 0;
}
.navlinks li a {
  color: #fff;
  padding: 1rem;
  display: block;
  text-decoration: none;
}
.navlinks li {
  list-style: none;
}
.navlinks li a:hover {
  text-decoration: underline;
  text-decoration-color: rgb(238, 230, 228);
  -moz-text-decoration-color: rgb(240, 235, 233);
  text-decoration-thickness: 3px;
}
.toggle {
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  /* display: flex; */
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 60px;
  height: 30px;
}
a {
  text-decoration: none;
}
.toggle button {
  right: 1em;
  top: 0.4em;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  outline: none;
  text-decoration: none;
  overflow: hidden;
  border: 2px solid #fff;
  border-radius: 5px;
  font-size: 0.8em;

  background: transparent;
  color: #fff;
}
button:focus {
  background: #fff;
  color: #000;
  text-decoration: none;
}
button:hover {
  background: #fff;
  color: #000;
}
/* .toggle .bar {
  height: 2px;
  width: 100%;
  background-color: #fff;
  border-radius: 10px;
} */
@media (max-width: 540px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .toggle {
    display: flex;
  }

  .navlinks {
    display: none;
    width: 100%;
  }

  .navlinks ul {
    width: 100%;

    flex-direction: column;
  }
  .navlinks.active {
    display: flex;
  }
  .logo {
    font-size: 1rem;
    margin: 1rem;
  }
  .navlinks li a {
    font-size: 0.8rem;
  }
}