body {
    background-color: honeydew;
    width: 100%;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: 'Segoe UI';
}
.nav {
  width: 100vw;
  background-color: #1b3963;
  display: flex;
  align-items: center;
  padding-right: 2rem ;
}
.nav > .nav-header {
  flex: 0.95;
  padding-left: 1rem; 
}
.nav > .nav-header > .nav-title {
  font-size: 20px;
  color: #fff;
}
.nav > .nav-list {
  display: flex;
  gap: 2rem;
}
.nav > .nav-list > li {
  list-style-type: none;
}
.nav > .nav-list > li a {
  text-decoration: none;
  color: #efefef;
  cursor: pointer;
}
.nav > #nav-check {
    display: none;
    transition: all 3s ease-in;
}
@media (max-width: 480px) {
  .nav {
    padding: 1rem;
    width: 100vw;
  }
  .nav > .nav-btn {
    display: inline-block;
    position: absolute;
    right: 0;
    top: 0;
    padding-top: 0.2rem;
  }
  .nav > .nav-btn > label {
    display: inline-block;
    width: 50px;
    height: 50px;
    padding: 13px;
  }
  .nav > .nav-btn > label > span {
    display: block;
    width: 25px;
    height: 10px;
    border-top: 2px solid #eee;
  }
  .nav > .nav-list {
    position: absolute;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    background-color: #1b3963;
    height: 0;
    transition: all 0.3s ease-in;
    top: 40px;
    left: 0;
    overflow: hidden;
  }
  .nav > .nav-list > li {
    width: 100%;
    margin-top: 1.5rem;
    text-align: center;
  }
  .nav > #nav-check:checked ~ .nav-list {
    height: calc(100vh - 50px);
    margin-top: 15px;
    transition: all .3s ease-in;
    z-index: 1000;
  }
}
ul { 
  padding: 0; 
  list-style: none; 
  display: flex;
  width: 600px;
  text-align: center;
}
li {  
  position: relative; 
  padding: 15px 0;
}
a {
  color: #fff;
  text-transform: uppercase;
  text-decoration: none;
  letter-spacing: 0.15em;
  
  display: inline-block;
  padding: 15px 20px;
  position: relative;
}
a:after {    
  background: none repeat scroll 0 0 transparent;
  bottom: 0;
  content: "";
  display: block;
  height: 2px;
  left: 50%;
  position: absolute;
  background: #fff;
  transition: width 0.3s ease 0s, left 0.3s ease 0s;
  width: 0;
}
a:hover:after { 
  width: 100%; 
  left: 0; 
}
@media screen and (max-height: 300px) {
	ul {
		margin-top: 40px;
	}
}