header {
  width: 100%;
  height: 100px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: fixed;
  z-index: 99;
  box-shadow: 0 0 10px #000;
  background: rgba(0, 0, 0, 0.5);
  top: 0;
}

#chk1 {
  display: none;
}

i {
  color: white;
  cursor: pointer;
}

header .logo {
  flex: 1;
  color: #fff;
  margin-left: 50px;
  text-transform: uppercase;
  font-size: 15px;
}

header .search-box {
  flex: 1;
  position: relative;
  height: 30px;
}

.search-box input {
  position: inherit;
  width: 85%;
  height: 40px;
  border: none;
  outline: none;
  background: #f2f2f2;
  border-radius: 30px;
  color: grey;
  font-size: 16px;
  text-align: center;
  padding-left: 5px;
  padding-right: 40px;
}

.search-box input:focus {
  width: 100%;
  transition: 0.5s;
  direction: left;
}

.search-box svg {
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 30px;
  border: none;
  position: absolute;
  top: 0;
  right: 0;
  transform: scale(0.9);
  background: green;
  align-self: center;
}

.C02 {
  flex: 2;
  display: flex;
  justify-content: space-evenly;
}

.C02 li {
  list-style: none;
}

.C02 li a {
  text-decoration: none;
  color: #fff;
  font-weight: 600;
  text-transform: uppercase;
  padding: 10px 15px;
}

.C02 li a:hover {
  border-bottom: 2px solid cadetblue;
}

header .menu {
  font-size: 2.5em;
  display: none;
}

@media (max-width: 1000px) {
  .search-box svg {
    position: absolute;
    /* top: 13px; */
    box-shadow: #000;
  }

  .C02 {
    position: fixed;
    top: 100px;
    right: -100%;
    background: rgba(0, 0, 0, 0.5);
    height: calc(100vh - 100px);
    width: 30%;
    flex-direction: column;
    align-items: center;
    transition: right 0.4s linear;
  }

  header .menu {
    display: block;
    width: 100px;
    text-align: center;
  }

  #chk1:checked ~ .C02 {
    right: 0;
  }
}

@media (max-width: 600px) {
  header .logo {
    font-size: 10px;
    margin-left: 8px;
  }

  header .C02 {
    width: 100%;
  }
}